Pro-Ject Tube Box E RIAA turntable preamplifier

Pro-Ject Tube Box S3 B balanced RIAA turntable preamplifier

TUBE PREAMPLIFIER FOR TUBE TUBE PREAMPLIFIER

Innovative miniature turntable preamplifier with tube output!

The Tube Box E finally enriches the PRO-JECT E range with a turntable preamplifier made with extremely popular tube elements.

It features a completely discrete circuit design without any operational amplifiers (OpAmps). This not only ensures fantastic, low-noise turntable amplification with clean measurements and precise RIAA equalization, but also ensures a long product life, as service, maintenance and repair are guaranteed for years to come. It also features replaceable tubes for sound modification. This gives the customer many options to choose from and change the sound image according to their preferences. The Tube Box E delivers a full and relaxed sound with lush mids, just like more expensive tube preamps

Precise adjustability for MM and MC cartridges

It supports both MM and MC cartridges and has a variety of gain settings that can be changed from the front panel. There is a wide range of adjustment options on the bottom of the device, allowing you to precisely match the Tube Box E to your cartridge!

The housing is made entirely of metal, which effectively protects it from electromagnetic interference and vibrations that can cause unpleasant listening experiences. The front panel and switches are made of beautifully machined aluminum.

Features

• Suitable for MM and MC cartridges
• Precise RIAA equalization in two sections, passive/active
• Completely discrete circuit design without operational amplifiers (discrete)
• 2 x ECC83 tubes (replaceable)
• Subsonic filter switch on the front mask
• Gain adjustment on the front mask
• Ultra-quiet circuit with FET input stage
• Dual mono circuit for optimized channel separation
• Polystyrene capacitors used whenever possible
• Gold-plated RCA inputs and outputs
• Multiple internal power supplies
• Well-filtered high-voltage anode power supply
• Available in silver or black

Specifications:

Piping: 2 x ECC83 (12AX 7A)

Input impedance: 10 ohms, 100 ohms, 1 kohm, 2 kohm

Input capacitance/impedance: 47 pF, 147 pF, 267 pF, 367 pF, 487 pF and 587 pF* / 47 kohm

Input confirmation: 40 dB, 43 dB / 50 dB, 60 dB and 63 dB

Noise level:

77 dB (A-weighted) with 40 dB input gain,

65 dB (A-weighted) with 50 dB and 63 dB input gains

THD:

<0.03% at 40 dB input gain

<0.07% at 50 dB and 63 dB input gain

RIAA equalization curve accuracy: +/- 0.5 dB/20 Hz - 20 kHz

Subsonic filter: At 20 Hz 18 dB/octave

Income: 1 pair of RCA/phono connectors

Line level output: 1 pair of RCA/phono connectors

External power supply: 18 V / 1,000 mA DC, suitable for your country's mains voltage

Power consumption: 470 mA DC, <1W in standby mode

Dimensions: W x H x D with sockets 103 x 73 x 131 mm

Weight: 450 g without power supply