1970’s Prototype Integrated AMP with Phone Stage.
Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps – 1970’s Prototype Integrated AMP with Phone Stage.
Prototype
Universal Prototype PCB For 8 Pin Tube Amplifier Preamp Headphone Valve w
Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps – Universal Prototype PCB For 8 Pin Tube Amplifier Preamp Headphone Valve w