Jet City PicoValve Guitar Amplifier Head Design by THD (5 Watts)

No longer available at zZounds
Get the tone you want for smaller gigs without the unnecessary abundance of wattage. This head offers a variety of tones from clean to hard rock overdrive.

From THD Electronics and designer Andy Marshall, the Jet City PicoValve is an incredibly compact, low-wattage tonal monster. Featuring dual 12AX7 preamp and a single 6L6 power tubes, the PicoValve guitar amplifier head provides touch-sensitive and punchy cleans up to beefy, heavy Rock tones. Get the tone you want for recording or live without the unnecessary volume required to light your tubes with 50-100 watt heads. The PicoValve's output power is selectable from 5 to 2.5 watts to get just the right amount of saturation out of your amp.


- THD's Unique Topology for swapping the power tube at will
- Uses nearly al octal-based tube without rebiasing
- Single channel with Preamp and Master Volume control
- 5 watts of tube power, switchable to 2.5 watts
- Multiple speaker impedance outputs
- THD's signature steel cage design

No Re-Biasing!

What's more, you can custom-tailor your Pico by swapping the power tube with nearly any octal-based tube, and there's no re-biasing necessary. Looking to complete the package? The Pico mates perfectly with the JCA12XS for a handsome and compact micro-stack.

- 5W/2.5W Power Selector
- Preamp Gain
- Bass, Middle, Treble EQ
- Bright Switch
- Master Volume

Preamp Tubes: 2x 12AX7

Power Tubes: 1x 6L6

Rectifier: Solid State

Cabinetry: Perforated, cold-rolled steel

Chassis: 16 gauge, cold-rolled steel

Output Power: 5W/2.5W into 4, 8 or 16-ohm speaker outputs

Input Power: Multi-tapped power transformer at 120v/220v
Standard IEC connector

Dimensions (HxDxW): 6.5 x 7 x 12.5 inches

Weight: 21 lbs

Reviewers gave this product an overall rating of 5 out of 5 stars. (4 ratings)
Submitted November 9, 2011 by a customer from
"The Pico Valve has tremendous potential. I can hardly wait to try a more expensive power tube in it. I heard it played online us"
Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
I like to jam on this amp all day long on and off while I sit at my computer and write. I would deeply miss its sound if I lost it and would re-buy it again. Its got sound like a high-performance street machine.

I love it. It is like an advanced overdrive foot pedal. It cranks out really nice sound. I own a Marshall Class 5 as well that I love. The Pico Valve is very addictive. If you want nice sounding overdrive (I also own a Blue Driver that I use for my Marshall) the Pico Valve amp has a lot of settings to use for it. I play it through humbuckers and single coil pick ups. I also run the amp through my 4 x 12 cab so the sounds I am getting are the best. I can hardly wait to try other tubes in it. It is made by THD and their other amps are very expensive.

The overdrive.

Ease of Use
Just like any good amp or good effects pedal, the longer you own it the more familiar you get with it and the easier it is to find the sound you want.

So far it seems like a well-built unit. I love the looks of it.

The price is equal to or cheaper if you compare it to buying a top-of-the-line boutique overdrive effects pedal.

Manufacturer Support
No, haven't needed to yet. Most companies are too busy manufacturing anyways. Good service should come through a dealer I believe. read more

The Wow Factor
I rate it high if you look at the amp for what it is - great overdrive. If you look at it as your 'main amp' you will be disappointed. If you want a general do-all amp, go for something that sounds really clean and build on that with some foot pedals. The Pico Valve stands in a class all its own. THD knows what they are doing.

Musical Background:
Just got back into it. I play guitar, I jam at home. I want to get some electronic drums and a keyboard as well.

Musical Style:
rock, blues, Christain Rock,
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