The ultimate development. By adding a tube-pre to the famous Thunderfunk Bass Amp we've bridged the gap between the two technologies.

TFB800-V2 $2195

plus $39 freight East of Denver
$49 freight West of Denver
Quote Foreign Freight


Light and Loud, Plug & Play Ease of Use
Unsurpassed Tone, Punch, and Clarity
The Choice of the World's BEST Bass Players!
Everything We Do - We Do For Tone.

TFB800-B2 $1895

Marcus Willett

"It's amazing how tight my new TFB800-B2 stays at high volumes. I had the gain around 4 and it was LOUD... but a good, controlled loud. Huge bottom, but when I laid into a Low-B, it was just sick."

Thanks again for the best amp I've ever owned. Has been making my Pedulla sound amazing on stage and in recordings for about 7 years now.   Best, Jeremy Shimko

I don't know where to start Dave but this AMP is amazing! Just the construction quality alone floored me but when I plugged it in it blew my socks off!! This is the loudest/clearest amp with great oozing tone I've had the chance to play out of. I've had a lot of bass heads before but this amp is in a league of its own. Thank you so much for making a great amplifier - especially in these times where it seems most manufacturers are taking the quickest shortcut to making a huge profit.


Hi, I just want to chime in to say thank you for making this amp! It's just a high quality piece of gear that fits my needs perfectly :)

All the best from Norway, Bjorn Ove

Greg Backstrom

"This is just a quick email to let you know that I am very satisfied with my TFB800-B2! I just returned from a rehearsal in a difficult acoustic environment with a difficult-to-manage cabinet. The feature set of the TFB800-B2 enabled me to control a barky midrange (3 dB cut at 1kHz), add some bass punch (2 dB boost at 180 Hz) and manage dynamic range with your best-of-class compressor. From song-to-song, the Timbre control was my go-to control that quickly dialed in the perfect sound for the selection at hand."

"I'm a pretty good bass player -- I don't think anyone would deny that. But your amp is the proverbial "best-kept-secret" that makes my band members, booking agent and most-tellingly, my independent FOH engineers constantly tell me that I am the best-sounding bass player they work with. Thanks for making me Seattle's go-to guy for great sounding bass!"

Bill Dickens & Dave

Thunderfunk Bass Amps are direct descendents of the legendary AMP BH-420, improved, and handmade in the U.S.A. by Dave Funk. With an all-aluminum chassis, the TFB800-B2 weighs in at only 21 pounds.

Quieter than other amps, with two great sounding DI's, it's perfect for Studio or TV use.
The Thunderfunk's tone is achieved by using high quality film caps in the preamp's signal chain... just like a high quality mixing board. Twenty-five times more expensive than electrolytics used in other amps, film cap's ability to not change value with frequency maintains better phase coherence throughout the amp, producing a focused punch unlike any other. You get a round, focused bottom that doesn't roll around the stage but instead projects into the room.

Add two to three times the filter caps of other amps, and you get lower distortion at the bottom frequencies. We purposely don't use toroid transformers as we've found they don't sound as good as the old-fashioned "EI" iron. And to reduce hum, we add a "hum-bucking" wire across the transformer to inject hum into the preamp's ground cancelling the radiated hum achieving an amp quieter than an equivalent toroid powered amp.

With our unique "SS/Tube Switch" you'll be able to choose from a super clean solid-state tone for slap and double bass playing, to a gutty, warm, tube-tone for all the rest.

Available Direct in the U.S.

Download an Owner's Manual

  • 800-watts RMS into 2 Ohms
  • 630-watts RMS into 4 Ohms
  • 305-watts RMS into 8 Ohms
  • "The Switch" with indicator LEDs
  • Mute Switch with LED
  • Limiter
  • Aural Enhancer
  • 4-Band Parametric Equalizer
  • Timbre Control
  • Headphone Jack
  • Line In/Line Out
  • Pre-EQ Balanced DI Output
  • Post-EQ Balanced Output w/Level Control
  • Ground Lift Switch for both XLR's Out
  • Large Supply Filter for Deep Response and Low Distortion
  • AC Signal Coupled to Reduce Input Pops
  • Pre-EQ Effects Loop
  • Post-EQ Effects Loop
  • Switchcraft Jacks
  • Two Speakons wired +1/-1, plus Two 1/4" speaker jacks
  • Aluminum Chassis
  • Weighs only 21 pounds!!!
  • Time Delayed Turn On
  • Quiet Power On/Off Switching
  • 100/120/220/240v operation
  • Quiet and reliable
  • Auto-Fan with Backlight!
  • Rack Mount Kit Available
  • 2-year warranty Parts & Labor

  • "The Switch"
    "The Switch" came about in September, 2003 when I spent some soundcheck time with LeAnn Rimes' bassist, Victor, and brought two Thunderfunk amps with me. We AB'd these two amps along with his EBS system. I had made a change to my design that I wanted to test, and the result was that the amp sounded more like the EBS... more "HiFi" and to my ears more "sterile." I decided I liked my original tone better, but then I thought, "Why not just put in a switch?" "The Switch" changes between the original High Voltage power supply that feeds the power amp, and a separate Low Voltage power supply that gives a more hifi tone. It is subtle. It's not some dramatic tone shaping circuit. It's a change in response and texture. The more sensitive your touch, and the louder you're playing (as the effect is more pronounced when the High Voltage power supply is sagging more), the more you'll hear the difference. It's NOT a two channel amp. It's NOT intended to be changed mid-song as it's not silent. It's just another option to setup the amp for use with different instruments and styles. The Switch is not a tone shifter. In the "tube" position there's more upper mid-range honk." Dave Funk.

    Some Secrets of Thunderfunk Tone