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Ampeg Tube Amp

Rattle in my bass amp?

I just bought an ampeg ba115t bass amp with a preamp tube, and when I play through it there is a loud rattle, I want to know what that could be and how to fix it.

You might have a microphonic tube. It happens when an element inside the tube is loose and rattles. Tubes can become microphonic after being jarred (like if you drop your amp) or sometimes it's a manufacturing defect. Some brands or tube types are more susceptible to becoming microphonc than others. Make sure it's not the cabinet rattling first. If it's the tube just replace it.

PS: make sure your speaker isn't blown.

Questions like this are usually better answered in the Performing Arts section of Arts and Humanities.

The Tube Amp Book, Volume 3 ...

Ampeg Heritage Series HSVT-CL 300W Tube Bass Amp Head Black $2399.99 Designed and assembled in the USA, the Ampeg Heritage SVT-CL is built with premium components and quality construction, delivering true Ampeg tone. Premium tubes, including "Winged C" tubes, provide unmatched tone while classic Ampeg EQ offers flexibility and control.

Ampeg SVT Bass Amp Half Stack $1749.98 This Ampeg Half Stack includes the SVT-3PRO Series amp head and the SVT-410HLF Classic Series bass cabinet.The tube preamp section of the Ampeg SVT-3PRO Series Head re-creates the great bass tone that made the original SVT the most respected bass amp of all time. The power section is tube-driven solid state with a toroidal transformer that generates less noise and magnetic interference. Delivers 450W @ 4 ohms and has an arsenal of tone-shaping tools: 3 bands of tone, a 5-position mid selector, 9-band graphic EQ, plus low and high boosts. Other pro features include input peak LED, input pad and bright switch, mute function, tuner out, variable line-out level, time-delayed turn on, DC-supplied filaments, and variable fan speed. 2U rackmount.The Ampeg SVT-410HLF Enclosure gives you plenty of volume and clean low end. This 4x10" cabinet has the same speakers and 1" horn as the SVT-410HE with 2" coils and 30 oz. magnets, but the cabinet itself is tuned differently. It's deeper and has a bottom port that results in better low-end response, down to 28Hz!

Ampeg BA300-115 1 x 15 Bass Combo Amp Black $649.99 With removable casters and weighing in at only 60 pounds, the Ampeg 300/115 combo is the epitome of portability. Ampeg has managed to stuff a 15" LF driver, an HF horn with Level control, and 300W of pure Ampeg output Into this compact unit. The amp section is also exceptionally versatile. You get all the Ampeg tone and teakability pros love, thanks to its 12AX7 tube preamp, Style control, 3-Band EQ, and Ultra-High/Low switches. Ideal for the semi-pro or professional player seeking superb tone-sculpting options and SVT-level output in an extremely transportable combo, the BA300/115 is the real deal in bass appeal.

Ampeg BA300-210 2 x 10 Bass Combo Amp Black $749.99 At just 50 pounds, you'll wonder how Ampeg crammed so many features into it's BA300/210 bass combo. Although it packs dual 10" LF drivers, a HF horn (with Level control), and 300 Watts of pure Ampeg output into its small frame, this combo is ultra-transportable. It even includes a set of removable casters, so you're ready to roll whenever you've got a gig or need to take it to the garage for practice. The bass amp gives you all the Ampeg tone-shaping you've grown accustomed to thanks to its 12AX7 tube preamp, Style control, 3-Band EQ, and Ultra-High/Low switches. In order to keep the weight factor low without sacrificing power output, Ampeg integrated a Class-D switching power supply. They also gave it a variable compressor and a selectable pre/post XLR tube DI with Level control. All together, it makes Ampeg BA300/210 amplifier ideal for the semi-pro to professional player seeking superb tone-sculpting options, extreme portability, and SVT-level output.

Ampeg SVT-3PRO Series Head $999.99 The tube preamp section of the Ampeg SVT-3PRO Series Head re-creates the great bass tone that made the original SVT the most respected bass amp of all time. The power section is solid state with a toroidal transformer that generates less noise and magnetic interference. Delivers 450W @ 4 ohms and has an arsenal of tone-shaping tools: 3 bands of tone, a 5-position mid selector, 9-band graphic EQ, plus low and high boosts. Other pro features include input peak LED, input pad and bright switch, mute function, tuner out, variable line-out level, time-delayed turn on, DC-supplied filaments, and variable fan speed. 2U rackmount.

Ampeg BA600-210 2 x 10 Bass Combo Amp Black $949.99 The Ampeg BA600/210 is not just another everyday bass combo. Even though it packs dual 10" LF drivers, an HF horn (with Level control), and a whopping 600 watts of pure power, the BA600/210 is easily transportable. You get Ampeg's legendary tone-shaping thanks to it's multi-stage 12AX7 tube preamp, style control, 3-Band EQ, and Ultra-Hi/Lo switches, all of which make it extremely versatile. It even lets you choose between 2 channels, the vintage B-15 channel and a more modern tone with the simple click of a switch.By integrating a Class D power section and universal switching power supply, Ampeg was able to keep the BA600/210's weight factor low, without sacrificing power output or sound quality. The combo also features a variable compressor, a selectable pre/post XLR tube DI with Level control (the same as Ampeg's SVT-DI), and an effects loop.If you're a semi-pro to professional player seeking high-powered tone in an extremely versatile and portable package, this bass combo from Ampeg is a great solution.

Ampeg SVT450H 450W Classic Series Head $749.99 The Ampeg SVT450H 450W Classic Series Head has authentic vintage Ampeg tube sound and the Classic series look. 450W MOSFET output provides the most tube-like feel of any amp in its class. Optocoupler limiter circuit maximizes clean acoustic output and crunches a little when defeated. 3-band EQ plus 9-band graphic EQ. Pre/post EQ XLR line out, line out level select, input pad, variable speed fan.

Ampeg BA600-115 1 x 15 Bass Combo Amp Black $849.99 The Ampeg BA600/115 bass combo epitomizes portability. Despite containing a 15" LF driver, an HF horn (with Level control), and 600W of power, this just over four cubic feet cab is quite transportable thanks to removable casters and its very manageable 50 pound weight. Soundwise, it's also quite versatile. You get Ampeg's legendary tone-shaping thanks to the multi-stage 12AX7 tube preamp, Style control, 3-Band EQ, and Ultra-Hi/Lo switches. With the simple click of a switch you can also choose between the vintage B-15 channel or the aptly named Modern tone.Ampeg integrated a Class D power section and universal switching power supply, which helps keep the BA600's weight factor low, but doesn't sacrifice power output or impressive sound quality. It also features a variable compressor, selectable pre/post XLR tube DI with Level control (the same as our stunning SVT-DI), and an effects loop.

Ampeg SVT-VR Vintage Reissue 300 Watt SVT Amp Head $1999.99 With the new SVT-VR, the Ampeg engineering and product development teams had one primary goal-get as close to the coveted tone of the classic SVT as possible. As a result, the preamp stage, power section, and even the rocker switches of the new SVT-VR emulate the exact signal path, tone, and vibe of the original.The all-tube, 300W SVT-VR amplifier is driven by a total of 6 - 6550 power tubes for massive power and tone. In addition to the '70s style dials and rocker switches, the SVT-VR's preamp circuitry has been faithfully re-created to match the original.

Ampeg SVT7PRO 1000W Class D Bass Amp Head Black $799.99 The SVT-7PRO pumps out a ferocious kilowatt of pure Ampeg tone in a compact design that weighs in at just 15 pounds. The SVT-7PRO features the same professional features as the other PRO Series heads including a flexible 5-position mid tone control, remote switching FX loop and a sleek onboard variable compressor.The tube preamp boasts a premium JJ 12AX7 that feeds the weight-defying Class-D power section. It's portable and small but can power everything from a small single PN-115HLF up to a monster Heritage SVT-810E.

Ampeg SVT-CL Classic Bass Head $1699.99 The reissue Ampeg SVT-CL Classic Bass Head brings back in all its glory a classic big stage amp that was the choice of players in the '60s. There's no question that the SVT-CL delivers 300W (to either 2 or 4 ohms). Its tube array includes 2 - 12AX7s in the preamp, 2 - 12AU7s and a 12AX7 for drivers, and six - 6550s for power. Controls include 3 bands of tone, a 5-way mid selector, plus ultralow and high boosts. Other pro features on the Ampeg SVT-CL Bass Head include normal and padded inputs, tube protection circuitry, auto-fault mode, fan cooling, slave output jack, 4/2-ohm selector, user biasing controls, and 3-position AC polarity switch. 24"W x 11-1/2"H x 13"D. 80 lb.

Backbeat The Tube Amp Book (Book/CD) $45 The deluxe revised Tube Amp Book edition contains 40% new material, with a comprehensive A-Z section covering all the great tube amp manufacturers, with histories, photos, and information. Amplifier brands include Ampeg, Dr. Z, Fender, Gibson, Hiwatt, Marshall, Matchless, Mesa/Boogie, Orange, Vox, Watkins and many others. Features a CD-ROM with 800 schematic and layout diagrams, from Ampeg to Western Electric, plus dramatically improved design and page layout. The Tube Amp Book's technical tips, in-depth electronic specs, explanations, 350 schematic diagrams, and full-color plates make it a must-have for tube-tone fanatics. Hardcover with convenient enclosed spiral binding. 416 pages.

Ampeg SVT-7PRO Head and SVT-410HLF Bass Speaker Cabinet Statck $1469.99 AMpeg tone for a great price. Order now.Get ready for explosive bass tone. This package features SVT-7PRO Head and SVT-410HLF Bass Speaker Cabinet Stack-two of Ampeg’s mosre celebrated head and cabinet, offering solid construction, immense power, and that distinct Ampeg tone that has made the company a household name. SVT7PRO 1000W Class D Bass Amp Head The SVT-7PRO pumps out a ferocious kilowatt of pure Ampeg tone in a compact design that weighs in at just 15 pounds. The SVT-7PRO features the same professional features as the other PRO Series heads including a flexible 5-position mid tone control, remote switching FX loop and a sleek onboard variable compressor.The tube preamp boasts a premium JJ 12AX7 that feeds the weight-defying Class-D power section. It's portable and small but can power everything from a small single PN-115HLF up to a monster Heritage SVT-810E.SVT-410HLF Classic Series Bass Cabinet The Ampeg SVT-410HLF Enclosure gives you plenty of volume and clean low end. This 4x10" cabinet has the same speakers and 1" horn as the SVT-410HE with 2" coils and 30 oz. magnets, but the cabinet itself is tuned differently. It's deeper and has a bottom port that results in better low-end response, down to 28Hz!SVT7PRO 1000W Class D Bass Amp Head RMS power output: 1000 watts @ 4 ohms 600 watts @ 8 ohms Preamp: Tube (1 JJ 12AX7) Power amp: Class D Tone controls: Bass, mid, treble Mid-tone control: 5-position Ultra low/high boosts Onboard variable compressor Transformer balanced line out Includes removable rack ears Power supply: Switching Weight: 15.5 lb./7 kgSVT-410HLF Classic Series Bass Cabinet 30"W x 24"H x 19"D 110 lbs.

Ampeg Micro-VR 200W Bass Amp Head $299.99 Don't be fooled by its diminutive appearance; the Ampeg Micro-VR is a compact powerhouse fully capable of pumping its 200W of genuine Round Sound into myriad live and recording situations. The portable, powerful solid-state bass amp head is a pleasant surprise from the second you lay eyes on it to the moment its indisputable Ampeg tone hits your ears.

Ampeg BA115 Bass Amp Series Combo $379.99 The Ampeg BA115 Bass Amp Series Combo, a member of Ampeg's starter series, has simple, clean looks and easy controls. The BA115 delivers 100W of power to a single 15" speaker. It provides simple 3-band tone controls, plus a "style selector" with 5 basic tone options. Other features include master and gain controls, a balanced line out (XLR), headphone jacks, and RCA inputs for connecting a CD or tape player. As a handy stage feature, the cabinet tilts back.

Ampeg SVT-2 Pro Series Amp Head $1899.99 The Ampeg SVT-2 Pro Series Amp Head is a shining example of Ampeg's attention to quality and detail. You know it's right when the sound you hear matches the sound in your imagination. For over 5 decades, Ampeg has been helping bass players reach that place where it all comes together. 5 - 12AX7 tubes in the SVT-2 Pro Head provide you with gobs of tone, texture, and gain, while the six - 6550s launch 300 heart-thumping watts into the air. Flexible EQ including 3 tone controls, a 5-position midband frequency control, and a nine-band graphic equalizer work together to help you shape the tone you demand from your gear. The 1/4" thick extruded aluminum front panel not only look good, it is essential for safe racking. With the power and flexibility of the Ampeg SVT-2 Pro Amp Head, your creative mind has the palette to deliver the goods!

Ampeg B2RE Rack Bass Head $599.99 The Ampeg B2RE Rack Bass Head cranks out 450W of solid state thunder at 4 ohms, 250W at 8 ohms. 3-band rotary and 9-band graphic equalizers let you hone in on the perfect sound for your style. 1/4" and Neutrik Speakon speaker outputs, XLR balanced line out, preamp out/power amp in jacks, and effects loop. And don't forget that killer Ampeg tone!

IK Multimedia Ampeg SVX Plug-in $199.99 Ampeg, a pioneer of bass amplification, and IK Multimedia, a leader in amp-modeling plug-in technology, have teamed up to offer legendary, signature Ampeg bass amp tones with the Ampeg SVX software plug-in.Mix and match between amps and cabinets of the most sought-after Ampeg gear to produce 24 amazing bass amp combinations. Plus, you'll have a complete bass pedalboard with 6 fully configurable stomp effects. In addition, select among 8 classic bass effects crafted after classic Ampeg stomps and other must-have vintage gear. Add a tuner and separate direct/amped signal path for a complete software bass rig.Ampeg SVX has over 20 bass gear emulations, including classic Ampeg bass amp models like the SVT-Classic, B-15R Portaflex "Flip Top," BA-500, and SVT-4PRO. Select from Ampeg stomps like the SPC-OCT Octaver or the SCP-OD Overdrive, or cabinets like the SVT-410H or SVT-810E, powered by AmpliTube's unique DSM (Dynamic Saturation Modeling) technology.For the first time any musician, songwriter, and producer can have a complete, "all-in-one" solution for bass recording. Not just for bass players, Ampeg SVX will give you that great bass sound you just can't get by plugging directly into a console or computer.

Ampeg Pro Series SVT-8PRO 2500W Bass Amp Head $2399.99 When only the best will do, turn to the Ampeg SVT-8PRO bass amp head from Pro Series for ultimate power and massive Ampeg tone. The SVT-8PRO combines Ampeg's vintage SVP-CL preamp with a 2500-Watt Solid-State power amp for Earth-shaking bass that just won't quit. Loaded with professional features throughout, the Ampeg SVT-8PRO bass amp head was designed for the most demanding player and the most demanding of gigs.An outstanding feature, unique to the Ampeg SVT-8PRO, is its speaker emulation circuitry, which allows players to dial in classic SVT overdriven tones at any volume level. This means you can get all the crunch and grind of an SVT pushed to the limit, but at a volume level that won't set off local seismic detectors.The bass amp head's 5-position Ultra Low selector gives you low frequency tone-sculpting capability like never before. From the fattest low-end to tight, highly articulated punch, the choice is yours. And the built-in DI can patch you right into the front of house, although you probably won't need it.

IK Multimedia Ampeg SVX Plug-in Education Edition $159.99 Ampeg, a pioneer of bass amplification, and IK Multimedia, a leader in amp-modeling plug-in technology, have teamed up to provide you with legendary, signature Ampeg bass amp tones in a software plug-in.Mix and match between amps and cabinets of the most sought-after Ampeg gear to produce 24 amazing bass amp combinations. Plus, you'll have a complete bass pedalboard with 6 fully configurable stomp effects. In addition, select among 8 classic bass effects crafted after classic Ampeg stomps and other must have vintage gear. Add a tuner and separate direct/amped signal path for a complete software bass rig.It has over 20 bass gear emulations, including classic Ampeg bass amp models like the SVT-Classic, B-15R Portaflex "Flip Top", BA-500, and SVT-4PRO. Select from Ampeg stomps like the SPC-OCT Octaver or the SCP-OD Overdrive, or cabinets like the SVT-410H or SVT-810E, powered by AmpliTube's unique DSM (Dynamic Saturation Modeling) technology.For the first time any musician, songwriter, and producer can have a complete, "all-in-one" solution for bass recording. Not just for bass players, Ampeg SVX will give you that great bass sound you just can't get by plugging directly into a console or computer.

IK Multimedia Ampeg SVX Studio $99 Get original "genre defining" bass sound, the sounds that defined rock and Motown Bass from your digital rig with the Ampeg SVX Studio Software/hardware package. It puts the power of legendary Ampeg bass tone into your recording rig. The Ampeg SVX Studio Edition software gives you 4 legendary Ampeg Bass Amp/cabinet combinations, two bass-centric stomp effects, plus the StealthPlug audio interface cable in one extremely easy-to-use package.The Ampeg SVX Studio Edition lets you plug into the ground-shaking growl of the "SVT Classic & 810" combination or take a time machine back to time machine back to Jamerson-era Motown with the butter smooth round tones of the B-15R and feel what bass is supposed to sound like. Use the software to re-amp your bass tracks, add extra punch to the kick, or create spectacular vocal effects all with one package. Plus, with the included Bass Octave and Envelope Filter stomp effects, you'll create bass tones never before heard by the human ear. Now that's heavy. Ampeg SVX Studio works with all major DAWs and as a standalone for rehearsal and learning.This special package also includes Sonoma WIreworks' Riffworks T4 recording software, Sonic Reality's AmpliGrooves backing tracks to jam with, IK Multimedia's Live guitar & bass amp and FX modeling software, and Mackie Tracktion 2 music production software

Ampeg Micro-VR Bass Amp Head and SVT210AV Bass Speaker Cabinet Stack $599.99 Included in this Ampeg kit is the Micro-VR bass amp head and the SVT210AV bass speaker cabinet stack. The Ampeg Micro-VR is a no-compromise amplifier packing 200W of solid-state MOS-FET fury, a switching power supply and the classical good looks and features of Ampeg's renowned SVT Series amplifier head. The Ampeg Micro-VR amplifier is designed as an ideal companion to the SVT 210AV cabinet. The switching power supply keeps the weight low, without sacrificing power output or Ampeg's legendary sound quality. Like all Ampeg products, your Micro-VR amplifier is designed by musicians and built using only the best of components. Each Ampeg amplifier is tested to confirm that it meets specifications, and to make it the absolute best that it can be. The Ampeg SVT 210AV speaker cabinet is designed to follow the classical good looks and features of the renowned SVT-Series cabinets. The SVT 210AV speaker cabinet is designed as an ideal companion to the Ampeg Micro-VR amplifier head. Like all Ampeg products, your SVT 210AV bass speaker cabinet is designed by musicians and built using only the best of components.

Ampeg B-2RE and SVT-410HLF Bass Half Stack Pack $1349.98 This Ampeg Bass Half Stack includes the B-2RE Rack Bass Head and the SVT-410HLF Classic Series Bass Speaker Cabinet.The Ampeg B2RE Rack Bass Head cranks out 450W of solid state thunder at 4 ohms, 250W at 8 ohms. 3-band rotary and 9-band graphic equalizers let you hone in on the perfect sound for your style. 1/4" and Neutrik Speakon speaker outputs, XLR balanced line out, preamp out/power amp in jacks, and effects loop. And don't forget that killer Ampeg tone!The Ampeg SVT410HLF Speaker Enclosure gives you plenty of volume and clean low end. This 4x10" cabinet has the same speakers and 1" horn as the SVT-410HE with 2" coils and 30 oz. magnets, but the cabinet itself is tuned differently. It's deeper and has a bottom port that results in better low-end response, down to 28Hz!

Groove Tube Silver Series ST-7027-S Power Tube $18.95 The Groove Tubes Silver Series ST-7027-S Power Tube is a rare power pentode used in early Ampeg amps and a good tube in all areas. The only option for an Ampeg VT22 or V4.

Ampeg SVT-4 PRO Series Bass Head $1399.99 The Ampeg SVT-4 PRO Series Bass Head gives you lots of tonal control and lots of power. This true hybrid features a 3-tube preamp, a Mos-Fet power amp that delivers 1,200W into 4 ohms, tone-shaping tools, and all the Pro features you'll ever need. For tone control you get 3 tone controls, a 5-position mid switch, a 9-band graphic, and ultralow/high boosts. It also features a defeatable optocoupler limiter, a variable 0-7:1 compressor, an internal 24dB/octave crossover, a 50Hz-1kHz crossover point, high/low balance control, tuner out/mute function, 1/4" biamp outputs, 2 balanced line outs with transformers, 2 effects loops, and 2 preamp out/power amp ins. It gives you classic SVT tone and more.

Sovtek 12AX7WA Preamp Tube $9.99 This Sovtek 12AX7WA Preamp Tube is world-renowned for its smooth, round tone. An ultra "low microphonic" tube that is used by Fender, Ampeg, Carvin, and Hartke, among others.

A-Designs REDDI Tube Direct Box $715 What do world-class bassists Reggie Hamilton and Justin Meldal-Johnsen have in common with producer/engineers Tony Shepperd, Ted Perlman, and Dylan Dresdow? The answer is using the A-Designs REDDI Tube Direct Box as their go-to DI. The REDDI has been field tested and referred to by recording engineers as the "best tube DI ever made." With wider bandwidth and just the right amount of gain, the REDDI stands clear and clean above the competition. Great for basses, guitars, synths, and electronic instruments that require a direct box for recording, the REDDI is ready to give you sound for recording or live performance that you won't ever want to be without. A Designs Audio REDDI, First Take: All-tube direct box with custom output transformer Based on the Ampeg B-15 with an ultra-wide frequency range New version adds a 1/4" thru jack Field-tested by notable engineers/producers before releaseAll-tube and custom transformers - the key to big, punchy sound Inside its unmistakable fire-engine red case, the REDDI houses a toroid power transformer, which offers the quietest operation, and a 6N1P tube-driven amplifier that feeds signal direct into a massive custom output transformer. Therein lies the secret to its sound. It's a well-known fact that transformers are responsible for a truly big, punchy sound (also called the "big iron" sound of the '70s). By sending the tube-amplified, harmonically rich signal direct to a transformer that is hand and "ear" built you get a sound like no other. (You don't have to take our word for it, see what the pros are saying below.) Ultra-wide Frequency Range Based on the sound of the legendary Ampeg B15 all-tube bass amp, The REDDI's tone is tight, focused, and deep - in essence, right in the pocket. It's ultra wide frequency range is another reason for the depth and clarity of the bass, as well as its unique ability to add a sense of dimensionality to whatever instrument is played through it. Another thing that professional bassists have discovered, is that rather than combining the DI sound with an amp, as is customary in bass recording, that sound of the REDDI alone is just perfect. On guitar, keyboards, and other electronic instruments, the REDDI works its particular brand of magic just as effectively as it does on bass. In fact, once you own a REDDI, you'll be tempted to put just about anything you can through it. (In fact, Grammy-winning producer Ted Perlman, has even used the REDDI with a Shure Green Bullet mic to record harmonica!) New version adds a 1/4" thru jack In order to keep the focus of the REDDI on sound quality, A Designs included only the most necessary features. On the original version of the REDDI, A Designs Audio had eliminated the 1/4" thru-put. The reason was because the REDDI sounded so good on its own, A Designs wanted users to realize that they didn't need to combine a miked amp with the direct sound of the REDDI. But A

Kustom Tube 12A Practice Amp $119.99 This little 12-watter uses a 12AX7 tube preamp and an 8" Celestion speaker to get warm, gutsy, real vintage amp tone. Controls include gain, low, high, volume with selectable Gain On and Frequency Shift functions. Headphone jack.

Ampeg BA115HP 220 Watt 1x15 Bass Series Combo Amp $549.99 Simple and to the point, the BA115HP has a 220W power section, custom 15" woofer, and 1" compression tweeter with a variable pad to adjust the crossover level. The straightforward-yet-effective EQ controls deliver lots of tonal flexibility, especially in conjunction with the Style response control. An XLR direct out allows patching to a mixing board or recording console while the built-in digital chromatic tuner and mute switch make it easy to tune silently.

Groove Tube Gold Series GT-12AU7 Preamp Tube $13.95 The Groove Tubes GT-12AU7 preamp tube is based on a design from the Ei factory in the former Yugoslavia. The GT-12AU7 is an excellent quality large-plate European-made driver tube, styled after the famous Telefunken line of dual triodes. The usual application for a 12AU7 tube is as the phase inverter that drives the power tubes. These are very well matched, and so are highly recommended for Ampeg SVT's and other amps using this tube as a phase inverter. Also commonly used as phase inverters in McIntosh Hi-Fi amps, some Ampeg amps, and will yield the most clean headroom in many amps. In the latest Fender Pro Series amps such as the Pro Reverb, Concert, and Twin, this tube in V2 (or a 12AY7), will drop the gain of the gain channel where some feel the tone is of a less intense or "buzzy" character. This will then allow a much wider range in the sweep of the volume and gain controls of this channel.

Ampeg Heritage Series HSVT-CL 300W Tube Bass Amp Head Black $2399.99 Designed and assembled in the USA, the Ampeg Heritage SVT-CL is built with premium components and quality construction, delivering true Ampeg tone. Premium tubes, including "Winged C" tubes, provide unmatched tone while classic Ampeg EQ offers flexibility and control.