Much like the JTM50 “black flag”, the 20W “Lead and Bass” is an amplifier that many guitarists aren’t terribly familiar with.

Both tonally and in design, the 20W shares similarities to the 18W standard.  However, there is no tremolo circuit. Instead, each channel is voiced slightly differently (hence “Lead” and “Bass”).  Moreover, the power section uses solid-state rectification, which increases the power output, adds headroom, and imparts a faster and more solid feel compared to the EZ81-equipped counterparts.

If you’re a fan of the 18W Normal channel, but would like more tonal variation and/or a firmer, more percussive attack…the 20W Lead and Bass is right up your alley.

As with our other modified 18Ws and 36Ws, this chassis is suitable for both head and combo formats.

Like other Ceriatone amps, we have labored carefully to select the finest components to suit the design, and the 36W uses our specially designed, custom transformers for superior reliability, frequency response, and feel.


Power: 20 watts
Tubes: EL84 x 2   /   12AX7 x 2
Channels: 2 (Lead, Bass)
Inputs: Dual for each Channel (High. Low Gain)
Impedance: 4/8/16 Ohm Selectable
External Bias Adjust: Included
Passive Effects Loop: Included

20 Watt Lead & Bass Lunchbox Amp Configurations:

  • Chassis I - $532
    (Fully working chassis. Tubes not included.)
  • Chassis II - $586
    (Fully working chassis. Tubes included.)
  • Amp Head I - $643
    (Fully working chassis installed in a head cabinet. Tubes not included.)
  • Amp Head II - $697
    (Fully working chassis installed in a head cabinet. Tubes included.)

Main photo is for illustrative purposes only and base pricing is for Chassis I. Photos may include options that are not included if you order the standard version of the amp or don't order all options available. We also may not offer all options available and/or shown in main illustrative photos. Photos are of products assembled by Ceriatone. We no longer sell kits. You must order all kits direct from Ceriatone Malaysia.

Ceriatone amps are custom made, 100% hand-built, point to point hand-wired amplifiers. Each amp is thoroughly tested and burned in before it is shipped to you. For this reason, the build lead time is approx. 11-14 weeks for custom hand-built amplifiers and 5-10 days for pedals and buffered effects loops.

Pricing shown on includes the shipping cost to the USA only. We only ship to the USA, Canada and Mexico. Shipping to Canada, Mexico, Puerto Rico and the US Virgin Islands will have additional shipping. We'll invoice the difference in shipping and it is due at the time the order is placed.

Note: We ONLY ship to PayPal verified addresses if paying via PayPal. No exceptions.

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20 Watt Lead and Bass

  • $532.00

Available Options

Tags: ceriatone, marshall, 20w, 20 watt, lead and bass