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Tube Tech SSA2B Summing Amplifier  From Tube-Tech

Tube Tech SSA2B Summing Amplifier perfect for down-mixing digital recordings on DAW's

Tube-Tech

Manufacturer's Description from Tube-Tech

The SSA 2B is the sound solution to the bottleneck problems arising when down-mixing digital recordings on DAW's. The 10->2 channel down-mixing unit directly targets the critical mastering process: Sonically it easily outperforms the quality of digital audio workstations and even betters the performance of mixing amplifiers built into the most high-end analogue consoles.

The TUBE-TECH SSA 2B Stereo Summing Amplifier features two very low noise / low distortion summing amplifiers with a very wide frequency response.
The inputs are transformer balanced and the circuits are symmetrical from input to output. The inputs are capable of handling extremely high input levels.
The Outputs are balanced and have fully floating transformers with a static screen. The power supply and the sidechain circuits are based on a solid-state circuit.
With the exception of the output stage all DC voltages are stabilised.

Product Features

  • 10 stereo input - 1 stereo output , or 4 mono, 8 stereo input - 1 stereo output 
  • 23-step gold plated output gain control
  • Master Output Gain: -10 dB to +10 dB
  • Fully symmetrical circuitry from input to output
  • Zero field transformer balanced inputs.
  • Maximum input > +30 dBu
  • Low noise: < -85 dBu @ all inputs terminated
  • Two large VU meters showing output level
  • Frequency response 5 Hz - 100 kHz
  • Distortion < 0.05 %
Tube-Tech

About Manufacturer

STATEMENT It is our mission to ensure the engineer has confidence in his working tools and feels comfortable working with them. To achieve this, it is our job to bring out the very best in the tubes, as well as continuously strive to offer the professional audio engineer outboard equipment of sublime quality ? both in terms of sound and reliability. Lydkraft ApS was founded in 1977 by partners John G. Petersen, Niels Wors?e and Karsten Bruun. Originally the core business of the company was PA, which was a successful venture until 1980, when the partnership was cancelled ? and Mr. Petersen decided to take Lydkraft on his own shoulders. The company was relocated to the interimistic surroundings of Mr. Petersens garage.... Mr. Petersen now redefined the business focus of Lydkraft: He terminated the PA business entirely and focused his efforts towards design, development and manufacturing. During this period small production runs of direct boxes, mixing desks and speaker systems were manufactured as well. In the early 80?s, the demand for vintage tube gear was increasing at a rapid pace. But at the same time tube equipment became more and more scarce by the day. The idea of taking on development & manufacturing of recording equipment with tubes came about in 1984. The first tube-based unit bearing the name TUBE-TECH was developed as an almost direct copy of the Pultec EQP 1A. The tubes of TUBE-TECH Program Equalizer PE 1A glowed for the first time in 1985 and the very first shipment containing 30 units stood ready in June 1985. Next in line was the TUBE-TECH PE 1B and TUBE-TECH Midrange Equalizer ME 1A, soon followed by the TUBE-TECH Compressor Limiter CL 1A and the TUBE-TECH Microphone Preamp MP 1A in 1987.

Specifications

  • Impedance
    Input: 50 kohm
    Output: < 60 ohm
  • Frequency response @ -3 dB: 5 Hz to 100 kHz
  • Distortion THD+N @ 40 Hz
    0 dBu < 0,05 %
    +10 dBu < 0,05 %
    Max. output: : +26 dBu 1 %
    Max input: +30 dBu 1 %
  • Noise Rg=200 ohm
    Output Gain @                    0 dB                 + 10 dB
    Inputs used                     1          4+8        1           4+8
    22Hz-22kHz:               < -90     < -85    < -80    < -75 dBu
    CCIR-468-4:               < -80     < -75    < -70    < -65 dBu
  • CMRR @ 10 kHz: < -60 dB
  • Gain:
    0.5dB steps +/- 0-3 dB
    1 dB steps: +/- 3-6 dB
    2 dB steps: +/- 6-10 dB
  • Gain tracking
    Between channels < 0.1 dB
  • Crosstalk @ 10 kHz: < -70 dB
  • Tubes
    ECC 82 2 pcs.
    ECC 83 2 pcs.
    ECC 88 4 pcs.
  • Dimensions
    Height: 2 units 88 mm 3.5"
    Width: 483 mm 19.0"
    Depth: 205 mm 8.1"
  • Weight
    Net: 5.4 kg 11.9 lbs.
    Shipping: 6,5 kg 14,3 lbs.
  • Power requirements
    @ 115 V/230 V, 50-60 Hz: 40-55 W
  • Notes
    All specifications @ RL=600 ohm
    Lydkraft reserves the right to alter specifications without prior notice