Church Amps IVY

The second and more recent amp design from Andy Church is based on Leo Fender’s venerable AA1164 circuit design for the 1964 Princeton Reverb, albeit with a few meaningful modifications. Friends were clamoring for a cleaner amp with tremolo and reverb, so I chose the Princeton Reverb as my starting off point, as it is such a great little amp.

I made a few changes from the original:

  • Larger First Filter Cap Value
  • Fixed Bias
  • Wider and Deeper Range for Tremolo Circuit
  • Reverb Dwell Control
  • Slightly elevated voltage in phase inverter section
  • 11″ Deep Solid Hardwood Cabinet w/ Celestion Gold 10″ Speaker


The IVY Stuart Special was commissioned by Peter Stuart, who wanted an IVY amp of greater power and headroom. The result is this wonderful little beast–with a loud, punchy, round and clear tone that holds firmly together even into higher volume settings.

Besides the mods listed above, this amp also features:

  • Mercury Magnetics specially designed Power and Output Transformers
  • Twin 6L6GC Tung Sol Power Tubes, generating 42 watts of output
  • Celestion Gold 12″ Speaker
  • Larger 20″ x 18″ x 11″ Solid Walnut Cabinet
  • Handmade Brookwood Leathers Handle
IVY Stuart Spoecial
IVY Stuart Special
IVY Stuart Special
IVY Stuart Special
IVY Stuart Special
IVY Stuart Special
Brookwood Leather Handle
Handmade Brookwood Leather Handle
3/8" Box Joints
3/8″ Box Jointed Cabinet