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Tube Box DS

The Pro-Ject Tube Box DS is a new valve output phono pre-amplifier that offers improved performance from the original Tube Box S/E whilst maintaining an appealing price.


The Tube Box DS presents an impressive sound making it a great audiophile upgrade for almost any mid-priced analogue hi-fi system.

With a unique variable impedance dial and a switchable subsonic filter, it can meet the needs of almost any MM or MC phono cartridge on the market.

The carefully selected audiophile-grade components make it possible to enjoy your valuable vinyl collection like never before.

The class-leading music reproduction qualities of the Tube Box DS deliver pure dynamics, full transparency, analogue warmth, bass texture, detail resolution and purity of all audible frequencies.

All in all, it effectively brings a retro ethic to modern phono electronics.

Key Features: Tube Box DS


MM/MC switches on rear panel

Unique continuously variable input impedance loading

Switchable gain settings for MM and MC cartridges

Capacitance switch for MM cartridges

Switchable subsonic filter

Dual-mono tube triode architeture

Premium ECC-83 Golden Pin Tubes

Ultra low-noise semiconductors

SMD technology

Technical Data: Tube Box DS




2 x ECC83 (12AX 7A)

Input Impedance: Stepless 10Ω – 1,000Ω


Input Capacitance / Impedance:


47, 147, 267 and 367pF



Input Gain:


MM – 40, 50dB

MC – 60dB


Noise Floor 82dB (93dB – IEC – A)


THD: < 0.1%


De-Emphasis Curves Accuracy: 20Hz – 20kHz / Max. 0.5dB


Subsonic Filter: @ 20Hz with 18dB/Octave


Input: 1 Pair RCA / Phono Sockets


Output: 1 Pair RCA / Phono Sockets


Outboard PSU: 18V / 1,000mA DC


Power Consumption: 490mA DC


Dimensions (W x H x D):


103 x 72 x 144mm

103 x 72 x 156mm (Incl. Sockets)


Weight: 1.1Kg (without PSU)