A1S HiFi Preamp Tone Board Tone Control Board 4 Knobs Top Version In-Line OPA2134+OPA2604

A1S HiFi Preamp Tone Board Tone Control Board 4 Knobs Top Version In-Line OPA2134+OPA2604

Features:
- Focus on HiFi audio electronics
- A1S top version OPA2134+OPA2604
- Mid-tone and treble are clear. Bass is powerful
- Designed with 4 knobs for operation
- High quality OPA2604AP op amp
- Power Supply: AC dual 12V-15V

Package Included:
- 1 x Set of Tone Board