Pro-Ject: Tube Box DS3 B Balanced Phono Preamp

LAB POINTS

• compact audiophile phono preamp with tube technology + True Balanced Connection
  
• connect (2) turntables simultaneously via XLR, mini XLR or RCA inputs
• supports both MM and MC cartridges
• customizable gain, input cartridge load settings on front panel
• switchable subsonic filter
  
• double mono circuitry for optimized channel separation
• high quality aluminum casing offers shielding from both vibration and electromagnetic interference
• available in black or silver
• made in Europe

"The Tube Boxes have been an integral part of our product portfolio for many years. Now, the new Tube Box DS3 B adds balanced in- and outputs to the beloved tube amplification. This precision tube phono preamplifier benefits from outstanding circuit technology from Dr. Sykora and uses ultimate components. You can connect two turntables at the same time & easily set everything on the front plate. Each input settings are stored in the memory. Large ranges from 40dB up to 65dB are possible. You can perfectly match it with a wide variety of cartridges and integrate it into the rest of your Hifi system, matching the volume levels accurately to other sources like CD players or streaming devices. Load impedance can be set continuously via potentiometer, a system invented by Pro-Ject Audio Systems. It allows you to seamlessly adjust the impedance during playback and immediately assess the impact of different loading options. This is necessary to find just the right load impedance for your cartridge. No other manufacturers implement this feature in this extreme way." - Pro-Ject

TECH SPECS

• tubes: 2 x E88CC / 6922
• input impedance: stepless 10-1000 Ohms, fix 47 kOhms
• capacitance: 50 / 150 / 300 / 400 pF
• input gain: 40 / 45 / 50 / 55 / 60 / 65 dB
• noise floor: >87dBV - ‚A‘ weighted
• THD: < 0,03%
• RIAA EQ Curve Accuracy: +/- 0,5dB/20Hz - 20kHz
• inputs: 1x 5-pin mini XLR / 1x pair XLR / 1x pair RCA phono
• outputs: 1x pair RCA, 1x pair XLR
• output voltage:18V/1000mA DC
• dimensions (WHD): 8.11" x 3.54" x 8.94” / 206 x 70 x 194 mm
• weight: 3.44 lbs / 1560 g 

COMES WITH

• 2x E88CC tubes
• power supply

ABOUT TRUE BALANCED AUDIO

• True Balanced Audio refers to a superior audio signal that results in higher sound quality with nearly zero background noise, check out our in-depth guide here
• True Balanced gear can be utilized as both balanced (with the proper components and signal path) or non-balanced
• True Balanced Audio requires a moving coil cartridge (MC) or the Pro-Ject Pick it Pro Balanced MM Cartridge
• True Balanced Audio requires a balanced audio cable (5-Pin DIN, mini XLR / XLR, or RCA > Mini XLR) connected from the turntable to the preamp
  
• True Balanced Audio requires a preamp that accepts balanced cables; you can output either XLR (recommended) or RCA from the preamp to speakers / amplifier
• shop all Pro-Ject True Balanced