Tube Tech SSA-2B 20-2 Stereo Summing Amplifier

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.


Tube Tech SSA-2B 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 SSA-2B 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.

    * Power requirements
      @ 115 V/230 V, 50-60 Hz: 40-55 W