Pro-Ject Tube Box DS2 Phono Preamplifier

Hugely Capable and Adjustable Tube Phono Stage

Pro-Ject's Tube Box DS2 is a precision vacuum tube phono preamplifier that benefits from outstanding circuit technology from Pro-Ject design guru, Dr. Sykora, and uses ultimate audiophile components for superb performance. It is compatible with both MM moving magnet and MC moving coil cartridges. It offers connection for two turntables plus two selectable line outputs.

The continuously variable selection of input impedance for low output MC cartridges while playing a record is a great feature that lets you experiment on the fly with different settings and let you ear decide which setting is best as your vinyl spins away. A large front-panel knob makes changing impedance values a breeze.

As you would expect from the LP experts at Pro-Ject, build quality and design are first rate. For delivering the listening experience intended by the recording studio, the Tube Box DS2 offers vinyl-friendly features, including precise RIAA equalization, ultra low-noise circuitry, and dual mono circuit design for optimized channel separation.

Infinitely Adjustable Impedance Settings

The Tube Box DS2's adjustability features ensure a perfect match with any moving magnet or moving coil phono cartridge. Selectable input impedance for moving coil cartridges provides values of variable 10-1000 ohm settings as well as fixed 47 k Ohms. Input capacitance choices are 100, 220, or 320 pF for moving magnet cartridges. You can also select gain for MM/MC cartridges of 40, 45, 50, 60, or 65 dB. A switchable subsonic filter prevents your amplifier and speakers from experiencing ultra low bass rumble below 20 Hz.

All components including tube output and polypropylene capacitors are audiophile-grade and guarantee a breathtaking sound experience. The DS2's tube complement consists of two ECC83 (12AX7) tubes. Looking for enhanced analog sound? The DS2 is a perfect upgrade for ambitious vinyl lovers.

The 'sandwich' alu/metal casing protects the sensitive inner circuitry from vibrations and electromagnetic interference. Choose black or silver finish.

Product Features

Compatible with MM and MC cartridges
Precise RIAA equalization
Ultra low-noise circuitry
Selection between two phono inputs and two 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 inputs and outputs
Sandwich alu/metal casing protects from vibrations and electromagnetic interference
Finishes: silver or black

Product Specs

Tube complement: 2x ECC83 (12AX7)
Input impedance: Variable 10-1000 Ohms, fixed 47 kOhms
Capacitance: 100 / 220 / 320 pF
Gain: MM / MC 40 / 45 / 50 / 60 / 65 dB
Output voltage typically: 500 mV/1kHz at 5mV/1kHz (at 40dB)
Signal-to-noise ratio: 88dBA
THD: < 0.04%
RIAA curve accuracy: +/- 0,2dB/20Hz - 20kHz
Subsonic filter: 20Hz @ 12dB/octave
Input / Output : 2x RCA
Power supply: 18V/1000mA DC
Power consumption: Max 490mA DC, < 0.5 watt standby
Dimensions (WHD): 8.1" x 3.6" x 8.9"
Weight (without power supply): 3.63 lbs.

Product Warranty

Parts & Labor

2 Years

Pro-Ject Audio Systems Warranty Information

Audio Advisor occasionally has fantastic deals on clearance items that are in excellent condition and we happen to have just one or two of.

Demo: Photo samples, gear we auditioned, items returned for wrong color/wrong size, etc.

Open Box: Contents briefly examined or inspected for promotional or internal purposes

Factory Refreshed: Original-condition items repackaged by the manufacturer

Cosmetically Blemished: A few dings or scratches, but functionally in original condition

Used: May show some signs of use

All clearance products are carefully inspected by our technicians before we offer the item for sale. All clearance products except Used items come with the original manufacturer warranty and are guaranteed to work and sound like new.

RETURN POLICY & PROCESS

NOTE:
You may only return a product purchased within 60-days of the receipt date.
The product must be in like-new condition and shipped in the original packaging (So SAVE THOSE BOXES!!!)

Call 1-800-942-0220 to request an RMA number.
Print the RMA number on the return shipping label.
Please make sure the return shipping name and address are written in a note on the inside.
Ship package to…

Audio Advisor Returns
4717 Broadmoor Ave SE, Suite G
Grand Rapids, MI 49512
(PRINT YOUR RMA NUMBER HERE)

NOTE: If a coupon was used in the ordering process, then the final value (recorded during payment) will be the price refunded.

Returned products are inspected by our warehouse and refunds are issued within 24 hours of inspection. Please note: it may take 7-10 business days for your bank to show the refunded amount. If you do not see it then, please reach out to our customer service team at 1-800-942-0220.

Audio Advisor will ship products anywhere in the United States, including Alaska, Hawaii, and U.S. Territories.