STC012 Low Noise Input Module (Balanced) - CML Audio

STC012 Low Noise Input Module (Balanced)

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STC012 Low Noise Input Module (Balanced)

The conventional balanced input stage built with 10K resistors and a 5532 op-amp has a far worse noise performance than a simple unbalanced input, and is also much noisier than any of our power amplifier designs. Its output noise is approximately -104 dBu.

The STC012 Low Noise Balanced Input Module solves this problem by the use of a multiple amplifier array that causes the noise from each amplifier to partially cancel, and in a similar way improves the common-mode rejection ratio; this array is driven by a multiple-buffer structure that allows the input impedance to be much higher than usual, preventing loading of external equipment and also further improving the CMRR. The elegant design does not require selected or exotic components. The noise output is less than -115 dBu.

The PCB is designed to run directly from the power amplifier supply rails, accepting a very wide range of voltages; no additional power supply is required. Special circuitry is used to accelerate relay drop-out when an error occurs.

Available as a fully assembled and tested unit, PCB with test notes only or as a kit of parts, PCB and build notes.

Full specification details for the STC012 Low Noise Balanced Input Module can be found on the Signal Transfer Company website »




01 » STC012 – PCB

  • STC012 Low Noise Input Module (Balanced)


Product Order Details

STC012 Low Noise Input Module (Balanced)
Reference Quantity Price (£) Description Order
STC012PCB 1+ £19.80 PCB and build notes only. Contact CML Audio »
STC012KIT 1+ £38.00 Kit of parts, PCB and build notes. Contact CML Audio »
STC012BLD 1+ £58.00 Fully assembled and tested unit. Contact CML Audio »

E&OE: While every effort has been made to ensure all information supplied is accurate, no liability is accepted for the consequences of any errors or omissions. All products are subject to availability. All prices are quoted in (£) Sterling and unless otherwise stated, are exclusive of VAT. CML Audio reserves the right to change the product range and prices without prior notice.



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