Ampeg SVT Classic All Tube Bass Guitar Amplifier Head 300 Watts
4.9
9 Reviews
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Other companies have spent decades trying to bottle the thunderous, all-tube tone of the original 1969 Ampeg SVT. Some have gotten close. Most haven't. None of them are Ampeg. The SVT-CL Classic is the direct descendant of that legendary head — 300 watts of pure, unapologetic tube power that has rattled stages, shaken venues, and made bassists feel genuinely important.
The Only Amp That Can Say It's an Ampeg
There's a reason bass players have been specifying the SVT-CL on their riders for over 50 years — it delivers an authentic vintage tube sound that no other amp on earth is legally, historically, or sonically allowed to call its own. Six 6550 power tubes push out a full 300 watts of warm, harmonically rich tone that practically speaks in complete sentences. It's the kind of amp that makes your fingers sound smarter than they actually are.
Six 6550 Power Tubes: The engine room of the SVT-CL. These six output tubes deliver 300 watts of dense, punchy all-tube power with the kind of low-end authority that makes subwoofers feel a little self-conscious.
Normal and Padded Inputs: Two input options let you dial in the right gain structure for your bass and playing style, keeping your tone clean and controlled — or gloriously on the edge, depending on your mood.
User Biasing Controls: Retube and rebias without sending the amp off to a technician. The SVT-CL trusts you enough to handle it yourself, which is more than can be said for most vintage gear.
Built to Protect Itself (and Your Gig)
A 300-watt all-tube amp living life on the road needs more than just good looks to survive. The SVT-CL comes equipped with smart protective features that keep the amp running clean even when the touring schedule is anything but.
Tube Protection Circuitry: Monitors the power tubes and steps in before a failing tube turns into a full-blown mid-set catastrophe. Think of it as a bouncer for your output section.
Auto-Fault Mode: If something goes sideways internally, the amp detects the fault and shuts down gracefully rather than dramatically. Your tubes and your transformer will thank you.
Fan Cooling: A built-in cooling fan keeps internal temperatures in check through long sets, back-to-back shows, and sweltering summer festivals where everything else is melting too.
Flexible Enough for Any Rig
The SVT-CL gets along with a wide range of cabinet configurations and live setups. Whether you're running a single 8x10 or a custom cab arrangement, it gives you straightforward control over impedance and signal routing.
4/2 Ohm Impedance Selection: Flexible output impedance options mean the SVT-CL can drive a range of cabinet configurations without breaking a sweat or a speaker.
Slave Output Jack: Send your signal to additional power amps or front-of-house systems with ease. The SVT-CL works well with others, as long as they can keep up.
3-Position AC Polarity Switch: A small but genuinely useful feature that helps you knock out ground hum and hiss before the soundcheck becomes a noise complaint.
The One That Started Everything
The Ampeg SVT-CL doesn't just chase a legacy — it is the legacy. From sold-out stadiums to sweaty basement gigs, this tube-powered powerhouse has defined bass tone for decades. It's loud, beautifully warm, and built sturdy enough to outlast most relationships. If you're ready to stop compromising and start shaking floorboards, this is the heavyweight champion your bass has been waiting for.
Ampeg SVT-CL Features:
300-watt all-tube bass amp head
Six 6550 power tubes for authentic vintage tube tone
Normal and padded input jacks for gain flexibility
Tube protection circuitry and auto-fault mode
Fan cooling for extended use and thermal management
Warranty: Heritage Series: 5 Years on Electronics, 2 Years on Speakers, 180 Days on Tubes; SVT Classic and Pro Series: 5 Years on Electronics, 2 Years on Speakers, 90 Days on Tubes; All PF BA, Diamond Blue & BA Combo Amps: 2 Years on Electronics & Speakers, 90 Days on Tubes. Discontinued & B-Stock Products: Limited No-Fault 90 Days
Ampeg SVT Classic Bass Guitar Amplifier Head Specifications
Item #:
AMG SVTCL
Manufacturer Part Number:
99-026-0105
UPC:
614252307802
Product Specifications
Ampeg SVT CL Specifications
Dimensions: 24" x 11.5" x 13"
Weight: 80 lbs
Balanced Line: Out
Driver Tubes: 2x 12AU7, 12AX7
Mid Tone Control: 5-position
Power Amp Tubes: 6x 6550
Preamp Tubes: 2x 12AX7
RMS Power Output at 2 Ohms: 300W
RMS Power Output at 4 Ohms: 300W
Tone Controls: 3 band
Switches: Ultra Low/High Boost Switches
Ampeg SVT Classic Bass Guitar Amplifier Head Specifications
Product Specifications
Ampeg SVT CL Specifications
Dimensions: 24" x 11.5" x 13"
Weight: 80 lbs
Balanced Line: Out
Driver Tubes: 2x 12AU7, 12AX7
Mid Tone Control: 5-position
Power Amp Tubes: 6x 6550
Preamp Tubes: 2x 12AX7
RMS Power Output at 2 Ohms: 300W
RMS Power Output at 4 Ohms: 300W
Tone Controls: 3 band
Switches: Ultra Low/High Boost Switches
Ampeg SVT Classic All Tube Bass Guitar Amplifier Head 300 Watts Manuals
Unfortunately I can’t really give it a review I haven’t played a show since I got it because of this coronavirus. It’s killing me not to break it in. It sounds great in my spare room. The whole house shakes. But seriously I read a lot of great things about it. And can’t wait for shows to start up ag...
Published date
09/04/20
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S. S. 🇺🇸
Verified Buyer
Sounds so much better than your amp!
Great Ampeg tone that just punches through the mix. I now have so much more headroom it's awesome. Tight, clear, & full sounding bass.
Published date
07/27/20
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Art S. 🇺🇸
Verified Buyer
Industry standard
Working with a world wide touring band 8 month out of the year and having the opportunity to pick up real touring gear at 0% interest is a amazing. Thanks AMS for the help to keep is on the road. You guys are a goal send.
Published date
12/27/19
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Polimp 🇺🇸
Verified Buyer
Killer amp!!
This is a great head. Nice and thick!! Great when paired with an svt410hlf. The staff at American musical supply were also great in getting me hooked up with this bad boy!!!
Published date
05/22/19
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Anthony 🇺🇸
Verified Buyer
Great amp
Sounds killer, what I’ve been looking for
Published date
04/26/19
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Frequently Asked Questions
The SVT-CL is the direct continuation of the original 1969 Ampeg SVT, making it the only all-tube bass amp that can legitimately claim that lineage. Other manufacturers have attempted to replicate the sound, but none carry the original Ampeg heritage or engineering DNA.
The SVT-CL delivers 300 watts of all-tube power via six 6550 output tubes. This makes it one of the most powerful all-tube bass heads available on the market today.
The SVT-CL supports 2-ohm and 4-ohm cabinet configurations, making it compatible with a wide range of bass cabinets. It pairs most famously with the Ampeg 8x10 SVT cabinet, though it works with various other setups as well.
Absolutely. Built-in tube protection circuitry, auto-fault mode, and fan cooling make the SVT-CL a reliable choice for demanding live environments. It has been a staple on professional touring rigs for decades for exactly this reason.
No, the SVT-CL includes user-accessible biasing controls that allow you to rebias the amp after a retube without sending it to a technician. This makes routine maintenance more straightforward and less costly for working musicians.
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