Down-Mixing With Tubes
The SSA 2A is the sound solution to the bottleneck problems arising when down-mixing digital recordings on DAW’s. Our new 4+16->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.
Product Description
The TUBE-TECH SSA 2A 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.
Key Features
  • 8 stereo+4 mono inputs - 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: < -90 dBu @ 8 inputs terminated
  • Two large VU meters showing output level
  • Frequency response 5 Hz – 100 kHz
  • Distortion < 0,05 %

  • 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: +21 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



Copyright © 2005 AudioPro International Inc. All rights reserved.