The Project Tube Box DS3 B is an audiophile-grade phono preamplifier with a valve output stage, and dual mono design. Serving as the successor for the massively popular Tube Box DS2, the DS3 matches its predecessor with its premium performance, sleek aesthetics, and even incorporates balanced inputs, and outputs, for a True Balanced connection.
Dual Mono Circuit
The Tube Box DS3 B is a sophisticated phono pre-amplifier for MM and MC cartridges. It benefits from a dual-mono electrical layout, valve output stage, and balanced connection options. Pro-Jectโs fully adjustable impedance dial on the front panel allows for fine adjustment with moving coil cartridge systems.
Balanced Input
Pro-Jectโs Tube Box phono stages are popular for their high-end sound performance as part of the range for many years. The Tube Box DS3 B is the first to add balanced input and output options to the mix as part of Pro-Jectโs True Balanced Connection concept.
The result is an even cleaner and clearer musical performance thanks to the reduced noise and higher gain from using a balanced connection.
Front Panel Settings
The Tube Box DS3 B still features RCA connection options as well, meaning you can connect two turntables or tonearms at the same time. The input settings for Loading, Gain, Capacitance, and the Subsonic filter โ all accessed clearly on the front panel โ are stored in the memory as you switch between RCA and XLR input options.
Impedance Adjustment
The Tube Box DS3 B includes Pro-Jectโs load impedance dial, which is featured on its other high-end phono stages. This handy tool allows for very fine, seamless adjustment of the impedance during playback, so you can easily assess the impact of different loading options on your cartridges and music style.
Premium Components
The Tube Box DS3 B has premium components throughout, all housed in an aluminium casing that protects against interference. It benefits from an external power adapter for reduced noise and electrical interference around the sensitive electronics but can also be upgraded further with a linear power supply upgrade.
The Tube Box DS3 B features a visual upgrade with magnetically attached wooden side panels for a more retro aesthetic.
Technical Specifications
- INPUT IMPEDANCE (MM): 47 kฮฉ
- INPUT IMPEDANCE (MC): Variable 10 – 1000 โฆ
- PHONO STAGE CAPACITANCE (MM): 50, 150, 300 or 400 pF
- PHONO STAGE GAIN (MM): 40, 45, 50 dB
- PHONO STAGE GAIN (MC): 50, 60, 65 dB
- PHONO STAGE EQUALIZATION OPTIONS: RIAA
- VALVES: 2 x ECC83
- THD: < 0.04 %
- SIGNAL TO NOISE RATIO (MM INPUT): 88 dB
- RCA INPUT(S): 1 Stereo Pair
- BALANCED XLR INPUT(S): 1 Stereo Pair
- BALANCED MINI-XLR INPUT: 1
- FIXED ANALOGUE OUTPUT(S): 1 x RCA Pair, 1 x XLR Pair
- DIMENSIONS (W X H X D): 206 x 91 x 227 mm
- WEIGHT: 1.5 kg
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