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  • Description

  • Specifications

  • Reviews

Pro-Ject Tube Box DS2 Phono Pre-amplifier

Our precision Tube Box DS2 phono preamplifier benefits from outstanding circuitry design by the brilliant Czech engineer, Dr. Bohumil Sykora. Compatible with most MM & MC cartridges on the market, it offers two turntable inputs so enthusiasts can easily toggle between two different turntable/cartridge combos. Continuously adjustable (‘on-the-fly’) input impedance for low output MC cartridges is a must-have feature that allows you to ‘tune’ the loading to achieve the sonics that best suit your system and your ears. Other features include input capacitance for MM cartridges and a switchable subsonic filter to stave off mechanical noise. All components including the tube output stage and polypropylene capacitors are audiophile-grade and guarantee a breathtaking sonic experience.


  • Suitable for MM and MC cartridges
  • Precise RIAA equalisation
  • Ultra low noise circuitry
  • Selection between 2 phono inputs & 2 line outputs
  • Dual mono circuitry for optimized channel separation
  • Selectable input impedance (for MC: fixed or variable)
  • Selectable input capacitance (for MM)
  • Selectable subsonic filter
  • Gold-plated RCA in & outputs
  • Sandwich alu/metal casing protects from vibrations and electromagnetic interference
  • Finishes: silver or black, with/without wooden side panels
  • Handmade in Europe

Features & Specifications

Nominal speeds

33/45 r.p.m.. *** 78 r.p.m. optional

Speed variance

33: ±0.50% 45: ±0.60%

Wow and flutter

33: ±0.17% 45: ±0.15%

Signal to noise


Effective tonearm mass


Effective tonearm length

8.6 " ( 218.5 mm)


18,5 mm

Power consumption

4 W/ 0 W in Stand-By

Outboard power supply

15V / 0 – 0.8 mA DC (set at 0.5 mA), universal power supply

Dimensions (W x H x D)

415 x 118 x 320 mm, dust cover open 415 x 365 x 405mm


5,6 kg

Dimensions packaging (W x H x D)

488 x 235 x 393 mm

Weight incl. packaging



MM-Cartridge Ortofon 2M Red:

Frequency range


Channel separation


Output voltage


Recommended load impedance

47kohms/amplifier connection – MM-input

Compliance/stylus type

20µm/mN – elliptical

Recommended tracking force




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