Price: $65
Don’t pay over: $65
Producer: Headphonia
Features: 9-18V DC external wall adaptor, AD8397 high performance opamp , LM6171 ground driver, detachable bass boost (8dB), gain adjustment (3x/8x), trickle charging using LM317 constant current (30mA)
Description: RollsRoyce of Cmoy amps. That’s not to damn the other producers with faint praise.
Good at: Build quality and features.
Don’t be fooled: Like [...]

Varying availability. They are hand made after all!
Price: $49
Don’t pay over: $49
Producer: Biosicencegeek
Features: OPA2227 OpAmp chip, Auto power on, Dual Gain Switch

Description: Good amp, with a myriad of options. I love the ‘Auto On’ feature and the dual gain switch.
Good at: Features
Don’t be fooled: by comments that CMoy amps are made by inexperience amateurs. [...]