Pro-Ject Audio Systems Tube Box DS Preimum Tube Phono Preamplifier

Why Buy New is pleased to offer for sale, this brilliant Pro-Ject Audio Systems Tube Box DS Premium Tube Phono Preamplifier.

It comes in the original box and packaging and includes a power cable, user manual, RCA cable, valve covers, and inserts for rear switches.

This has been tested and is in full working order. It is sold with our own 3 month warranty.

The cosmetic condition is excellent. There are some minor marks. Please see the condition in the images.

FREE national courier delivery.

Why Buy... from us?
Because all of our items go through a full inspection, get serviced (if required), PAT tested for electrical safety, deep cleaned and all come with a warranty. We are 100% committed to customer care and are always on hand pre or post-delivery for technical help and advice.

Pro-Ject Tube Box DS Phono Preamplifier

Product Description

The Pro-Ject Tube Box DS takes the sound quality and versatility of its predecessor, the Tube Box S/E, to a new level. With its enhanced feature set and superior sound performance, it is an ideal choice for audiophiles seeking a high-quality preamp at an attractive price. The Tube Box DS features several adjustable settings, including Pro-Ject’s unique variable impedance dial and a switchable subsonic filter, making it perfectly suited for both MM (Moving Magnet) and MC (Moving Coil) cartridges. The valve output stage ensures a smooth, natural sound, far surpassing what you might expect from its price range.

Key Features

• MM/MC Switches: Located on the rear panel for easy selection.
• Continuously Variable Input Impedance Loading: Provides precise control for optimal cartridge matching.
• Switchable Gain Settings: 40dB for MM and 60dB for MC cartridges.
• Capacitance Switch for MM Cartridges: Offers four selectable capacitance values (47, 147, 267, and 367pF).
• Switchable Subsonic Filter: Filters out low-frequency rumble (18dB/Octave at 20Hz).
• Dual-Mono Tube Triode Architecture: Enhances sound clarity and separation.
• Premium ECC-83 Golden Pin Tubes: Ensures warmth and smoothness in the output.
• Ultra Low-Noise Semiconductors & SMD Technology: Contributes to a quieter and more refined sound.

Technical Specifications

• Tubes: 2 x ECC83 (12AX7A)
• Input Impedance: Stepless from 100Ω to 1,000Ω
• Input Capacitance / Impedance: 47, 147, 267, and 367pF / 47kΩ
• Input Gain:
• MM: 40dB, 50dB
• MC: 60dB
• Noise Floor: 82dB (93dB - IEC A-weighted)
• Total Harmonic Distortion (THD): < 0.1%
• De-Emphasis Curves Accuracy: 20Hz - 20kHz / Max. 0.5dB
• Subsonic Filter: @ 20Hz with 18dB/Octave
• Inputs: 1 Pair RCA / Phono Sockets
• Outputs: 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 (Main Unit)
• 103 x 72 x 156mm (Including Sockets)
• Weight: 1.1kg (without PSU)