Pro-Ject Phono Box II USB 3081110079 Leaflet

Pro-Ject Audio Systems is a registered trademark of Heinz Lichtenegger 

1050 Vienna · Margareten Road 98 · Tel. +43(0)15448580 · Fax. +43(0)15456697 

www.project-audio.com · © Heinz Lichtenegger · Revision 15.10.10 

 

 

Pro-Ject Phono Box II USB 

MM/MC Phono Pre-amplifier with 
A/D converter and USB output 

Good sound from sound technology 

Product information

 

 

Metal case shields the electronics from vibrational and electromagnetic interference 

 

Optimal channel separation through dual-mono circuitry 

 

Special low-noise ICs used 

 

Gold plated RCA connection sockets 

 

Outboard power supply included 

Features 

 

Amplification and RIAA equalisation for MM and MC cartridges 

 

Digitalisation of analog signals for recording direct to disk via USB with suitable recording programs 

 

Phono MM/MC selection switch located at the rear of the unit 

 

Small size allows installation close to record player 

 

Automatic recognition, without additional driver, by standard PC 

 

Runs on Windows XP

®

, Windows Vista

®

, Windows 7

®

 and Mac OS operating systems 

Technical specifications 

Input impedance, MM: 

47kohms/120pF 

Input impedance, MC: 

100ohms/120pF 

Gain, MM: 

40dB 

Output voltage typically: 

300mV/1kHz at 3mV/1kHz (MM input) 

Gain, MC: 

60dB 

Output voltage typically: 

300mV/1kHz at 0,3mV/1kHz (MC input) 

Max. output 

9,5V (1kHz) 

Noise floor, MM: 

86dB (94dB - A weighted) 

Noise floor, MC: 

68dB (75dB - A weighted) 

THD, MM: 

<0,01% 

THD, MC: 

<0,05% 

RIAA-equalisation curve accuracy: 

20Hz - 20kHz / max. 0,5dB 

A/D converter: 

Burr Brown PCM2904 16-Bit Delta Sigma 

Sampling rates: 

32, 44,1 and 48kHz 

USB output: 

digital serial data protocol USB 1.1 

THD: 0,005% 
Noise floor: 

96dB 

Dynamic range: 

93dB 

Outboard power supply: 

16V/200mA AC, suitable for your country's mains supply 

Power consumption: 

16V/100mA AC 

Dimensions W x H x D (D with sockets):  103 x 36 x 103 (115)mm 
Weight: 

570g without power supply 

The manufacturer reserves the right to alter the technical specifications without notice.