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© Pro-Ject Audio Systems · Pro-Ject Tube Box S2 · Revision 2017.12.5
4
Front panel controls
Stand-By
The button on the left side of a front panel of the unit turns the unit on or returns it to standby mode. The blue
LED above the stand-by push button shows that the unit is switched on.
Gain setting
Buttons marked with ◄and ► set gain of the amplifier. Selected value is indicated by LED. Possible settings
are 40, 43, 50, 53, 60 and 63dB.
Subsonic
The button on the right side of a front panel turns on and off subsonic filter. The blue LED above the button is
illuminated when it´s on.
Technical specifications Pro-Ject Tube Box S2
A
Typical for low output MC cartridges,
B
typical for MM or high output MC cartridges
* Input capacitance is irrelevant for low-output MC cartridges
Tubes: 2 x ECC83 (12AX 7A)
Input impedance: 10ohms, 100ohms, 1kohm, 2kohms
A,
Input capacitance/impedance: 47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms
B
Together with other input impedance settings without any influence!
Input gain: 40dB,43dB
B
; 50dB, 53dB and 60dB, 63dB
A
Noise floor: 80dB (A weighted) at 40dB input gain
75dB (A weighted) at 50 dB and 63dB input gain
THD: <0,02% at 40dB input gain
<0,05% at 50dB and 63dB input gain
RIAA-equalisation curve accuracy: 20Hz - 20kHz / max. 0,4dB
Subsonic filter: at 20Hz with 18dB/octave
Input: 1 pair RCA/phono sockets
Line-level output: 1 pair RCA/phono sockets
Outboard power supply: 18V/1.000mA DC, suitable for your country's mains supply
Power consumption: 470mA DC, <1W in standby
Dimensions W x H x D (D with sockets): 103 x 73 x 119 (131)mm
Weight: 410g without power supply
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