Pro-Ject Tube Box DS

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  • Regular price $699.00


Tube Box DS is a high-end MM/MC phono preamplifier featuring an unprecedented level of flexibility at its price point. It is based on a dual-mono circuit topology featuring a matched pair of premium ECC-803 Golden Pin Tubes. Premium parts are employed throughout the preamplifier circuitry including costly ultra-low noise semiconductors. Unique to this model is continuously variable control of cartridge input impedance loading. By being able to adjust anywhere within the range of from 10-1,000 ohms, you can dial in the perfectly appropriate impedance for your particular phono cartridge therefore achieving the cartridge's optimized performance. Gain adjustment is also selectable in three steps of 40/50/60 dB, covering a wide range of both Moving Magnet of Moving Coil cartridge brands. For Moving Magnet cartridges input capacitance is also variable. A switchable subsonic filter is also provided that can filter out frequencies below 20Hz.

TECHNICAL SPECIFICATIONS

Tubes 2 x ECC-803 Golden Pin Triode Type
Load Impedance Variable from 10 - 1,000 ohms
Input Capacitance Variable 47pF, 147pF, 267pF and 367pF / 47k ohms
Input Gain 40dB / 50dB / 60dB
Noise Floor -82dB
THD 0.1%
RIAA Curve Accuracy 20Hz-20kHz / max 0.5dB
Subsonic Filter 20Hz at 18dB/octave, Switchable
Input 1pr RCA Jacks
Line Level Outputs 1pr RCA Jacks
Power Supply Output Voltage 18 VAC / 1,000mV
Power Consumption 490mA DC
Dimensions (WHD) 4.1 x 2.9 x 5.7 in., 103 x 72 x 144 mm
Weight 2.4 lbs., 1,100g
Finish Black or Silver