The Phono Box RS is an ultra-low noise, ultra-low distortion phono preamplifier designed to deliver breathtaking performance from your phono cartridge. It offers an unprecedented range of adjustments, ensuring that you can fine-tune the sound to perfection. Featuring continuously adjustable (even ‘on-the-fly’) loading via the front-facing potentiometer, you can easily ‘tune’ while listening, providing an immersive and customizable listening experience.
Please Note : This product is an open unit and has been used. It was purchased in 2024. The original box is not available.
| Specification | Value |
|---|---|
| Input Impedance (Variable) | Stepless 10ohms – 1,200ohms A |
| Input Capacitance/Impedance | 100pF, 200pF, 300pF, 420pF, and 520pF / 47kohms B |
| Input Impedance (Fixed) | 10ohms A |
| Input Gain (XLR sockets, +6dB) | 40dB, 50dB B / 60dB A |
| Noise Floor | 91dB (A weighted) |
| Total Harmonic Distortion (THD) | 0.019% |
| De-Emphasis Curve Accuracy | 20Hz – 20kHz / max. 0.3dB |
| Subsonic Filter | At 20Hz with 12dB/octave |
| Inputs | 1 pair RCA/phono sockets, 1 pair XLR sockets |
| Line-Level Output | 1 pair RCA/phono sockets, 1 pair XLR sockets |
| Wiring XLR Sockets | 1 ground, 2 “hot” and 3 “cold” |
| Outboard Power Supply | ±18V/250mA DC, suitable for your country’s mains supply |
| Power Consumption | 150mA DC, <1W in standby |
| Note | A: typical for low output MC cartridges, B: typical for MM cartridges or high output MC. Input capacitance is irrelevant for low output MC cartridges. |