The Harry Joyce Custom 30 watt amplifier is an A-B class amplifier. These are all point to point, hand wired. Built right here in the United States of America under the watchful eye of George Scholz.

Material:
– 18 mm Marine grade Birch plywood
– Solid dove tail construction
All Harry Joyce Custom 30 watt Amplifier features include:
– Stainless steel chassis
– Enlarged filtering in power and bias supply
– All Teflon and Ceramic tube sockets
– Gold Pure tone speaker jacks
– Improve shielding & layout
– Hum balance
It provides 4 inputs:
– Normal Hi/Low
– Brilliant Hi/Low
This Harry Joyce Custom 30 watt amplifier is a master volume design which includes:
Gain controls for Normal or Brilliant inputs, Tone controls for Bass, Treble, Mids and Presence. The pre-amp stage uses (4) of our custom 12AX7 pre-amp tubes for inputs, tone, voltage amp, and driver. The output stage (output transformer) is designed for our EL34HJ power tubes.
On the back side, voltage and ohm selector, 2 speaker outputs (in parallel) and Hum balance, send and return (effect loop), as well as, our custom fuse holders for power, high voltage supply and IEC Filtered Powered Entry Module.
Specs for Harry Joyce Custom 30 Watt amplifier:
Input resistance-High: 1 meg ohm
Input resistance-Low: 100 K ohm
Inputs can be linked from channel to channel
Tone controls:
Bass + minus -20db
Treble -6 to 30db with presence
Middle +10db
Output Power RMS: 30 Watts
Input Voltage Selector: 120Vac, 230Vac 50/60 HZ
Output Ohm Selector: 4, 8, 16 ohms
Effect Loop: Send through master output, return input 1 meg ohm
Preamp Tube: 4x 12AX7
Power Tube: 2x EL34HJ
Fuse Power: 3A slow acting
Fuse High Voltage: 500mA fast acting