From bright spanking clean through to rich creamy overdrive - this amp can do it all! The Hiwatt Custom 20 is ‘cathode biased’ (aka Class A) which adds a ‘touch sensitive’ feel to the amp's response. With the addition of a Gain Control, you are able to drive the Custom 20 into an awesome natural overdrive without the customary Hiwatt ‘loud’. Perfect for studio work and intimate venues.

Pedal friendly, compact, and able to travel the world this professional piece of gear is hand-built in the Hiwatt Custom Shops.

— Independent Hi and Low inputs. Versatile and intuitive, perfect for bringing life out of dark pickups or taming shrill high-end in bright pickups.

— Unlike higher wattage models focused on delivering seemingly endless clean headroom, the SA20 will break up with the gain control past noon, offering the choice of a beautiful Hiwatt signature clean base for pedals and crystal clear tones, or satisfying tube saturation at the turn of a knob.

— Simplified controls for quick and effortless tone shaping

Wattage: 20W
Channel: Single Channel

Inputs: Hi, Low
Output: 2 x 1/4" Speaker Out

Preamp Valves: 3 x ECC83 (12AX7)*
Output Valves: 2 x EL84


  • Master Volume
  • 3-Band EQ shared by both channels — Bass, Treble, Middle
  • Gain
  • Standby — On/Off
  • Mains — On/Off

Voltage: Switchable using World Voltage Selector on the rear panel — 100V, 115V, 230V, or 240V

Impedance: Switchable using Variable Impedance Inputs on the rear panel — 4 Ω, 8 Ω, or 16 Ω

Based on Hiwatt’s original circuit designed by Dave Reeves.
Original Partridge spec English transformers.
Meticulously hand-wired to Harry Joyce’s exacting military standards.
Proudly manufactured in our Custom Shop in Doncaster, England.

Band Ready — Rugged 18mm Birch-Ply Construction
Road Ready — ’Burned In’ and Tested by our Custom Shop Technicians
Touring Ready — World Voltage Selector and Variable Impedance Inputs

Please send us a message here on Reverb if you have any questions about this or any of our products! More details on all our products can also be found on our official website: (link is on our Reverb profile).

Additional Custom Shop options may be available by request. If you're interested, please message us here on Reverb before placing an order and we'll do our very best to build your ideal Hiwatt.

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
  • SA20
  • Traditional Black Tolex
  • 2022
Made In
  • United Kingdom

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Scarborough, Canada
Joined Reverb:2019

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