Pro-Ject Audio Systems
Tube Box E
The Pro-Ject Audio Systems Tube Box E is a tube phono preamplifier for MM and MC cartridges. It uses a fully discrete, dual-mono circuit without operational amplifiers, a FET input stage, two replaceable ECC83 (12AX7A) tubes, and two-part passive/active RIAA equalization. The metal enclosure includes a machined-aluminium front panel and provides selectable input loading, 40–63 dB gain, gold-plated RCA inputs and outputs, and a 20 Hz subsonic filter.
MSRP
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Original list price not on record.
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Specifications
- Input
- 1 pair RCA/phono sockets
- Tubes
- 2 x ECC83 (12AX 7A)
- Input gain
- 40 dB, 43 dB / 50 dB, 60 dB und 63 dB
- Weight
- 450 g without power supply lbs
- Noise floor
- 77 dB (A weighted) at 40 dB input gain, 65dB (A weighted) at 50 dB and 63 dB input gain
- THD
- <0.03% at 40 dB input gain <0.07% at 50 dB and 63 dB input gain%
- Dimensions
- 103 x 73 x 131 mm"
- Input impedance
- 10 ohms, 100 ohms, 1 kohm, 2 kohms
- Subsonic filter
- at 20 Hz with 18 dB/octave
- Line level output
- 1 pair RCA/phono sockets
- Power consumption
- 470 mA DC, <1W in standby
- Outboard power supply
- 18 V / 1.000 mA DC, suitable for your country s mains supply
- Input capacitance impedance
- 47pF, 147pF, 267pF, 367 pF, 487 pF and 587 pF* / 47 kohms
- Riaa equalisation curve accuracy
- +/- 0.5 dB/20 Hz - 20 kHz
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