WeImprovise! is a work in progress, proof of concept, & labor of love. Find Out More.

Peavey & Joe Satriani Collaborate On JSX® Mini Colossal™ Amp [ Winter NAMM 2007 ]

United States
Jan. 18, 2007, ANAHEIM, Calif. (Winter NAMM exhibit #5740) — Peavey and guitar hero Joe Satriani proudly introduce the JSX Mini Colossal, an authentically vintage, miniature class-A marvel. The Mini Colossal is the third amplifier in the popular Peavey JSX Series.

The JSX Mini Colossal combines a 12AX7 preamp tube and an EL84 power tube in a class-A topology that has no negative feedback. The new Peavey-exclusive Power Sponge™ output attenuator continuously adjusts the power output of the amplifier from 5 watts to 0 watts while maintaining the distortion characteristics of the class-A power amp at any volume level.

A built-in transformer-balanced XLR direct output with a unique microphone simulator allows players to send the amplifier signal to a recording device or front-of-house mix without the use of a microphone, while an onboard optical tremolo circuit with speed and intensity adjustments adds a vintage-amp vibe.

“There’s a dynamic thing happening with class-A amps that is completely different from modern- style amplifiers,” said Satriani. “A modern amp like the JSX Head allows you tons of gain, regardless of the amount of pressure you play with, but when you play through a class-A amp and hit a note very lightly, it doesn’t sound like it has any gain behind it. With each little increment of force that you add to the picking stroke, the amp goes into more and more overdrive.

“I found that when I write, I get myself into situations where a class-A amp is what I need to make the track work. That led us to create the Mini Colossal. It provides an entirely different guitar dynamic from the three-channel JSX, yet it’s very complementary on recordings where I used the amps together. Artistically, it fit what I was trying to convey.”

The JSX Mini Colossal will be available from authorized Peavey retailers in Q1 2007.


  • Designed by Peavey and Joe Satriani
  • Pure Class A operation
  • One 12AX7/ECC83 tube and one EL84/6BQ5 tube
  • 5 watts (rms) into 4, 8 or 16 ohms (selectable impedance)
  • Power Sponge attenuator, adjustable from 0 to 5 watts
  • Preamp volume w/ tone control
  • Effects loop
  • Optical tremolo circuit
  • Microphone-simulated, transformer-balanced XLR direct output
  • XLR ground lift
  • Custom 8″ speaker
  • Single input
  • U.S. MSRP $599.99
Previous Entry
Harman Pro Group HiQnet™ Sound System Featuring JBL, Crown And dbx Components In A Class Of Their Own At Bridge School Benefit Concert [ Winter NAMM 2007 ]

ANAHEIM, CALIFORNIA, January 18, 2007 — In a comprehensive demonstration of the Harman Pro Group’s capacity to deliver the highest performing loudspeakers, processors, mixers and amplifiers at the component level and industry-leading integr …

Fender Recreates Legendary “57 Deluxe™ Amp [ Winter NAMM 2007 ]
Next Entry
Fender Recreates Legendary “57 Deluxe™ Amp [ Winter NAMM 2007 ]

A Premium, Hand-Wired Recreation of One of the World’s Most Timeless and Collectible Tube Guitar Amps SCOTTSDALE, Ariz. (January 18, 2007) — Fender amp-heads, rejoice! In a nod to countless requests from fans worldwide, Fender will begin p …

Patreon Logo, Become A Patron

Help support WeImprovise! for as little as $5/€5/£5 per month via Patreon Patreon.