› EUR (Europe) 
Preamplifiers
We have a range of high-performance, low-noise preamplifiers that are ideal for a wide variety of applications including low-temperature measurements, optical detection, and audio engineering
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SRS SR570 Low Noise Current Preamplifier
Excl. VAT: £2,468.00 Incl. VAT: £2,961.60- 5 fA/√Hz input noise
- 1 MHz maximum bandwidth
- 1 pA/V maximum gain
- Adjustable bias voltage
- Two configurable signal filters
- Variable input offset current
- Line or battery operation
- RS-232 interface
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SRS SR560 Low-Noise Voltage Preamplifier
Excl. VAT: £2,468.00 Incl. VAT: £2,961.60- 4 nV/√Hz input noise
- 1 MHz bandwidth
- Variable gain from 1 to 50,000
- AC or DC coupled
- Two configurable signal filters
- Differential and single-ended inputs
- Line or battery operation
- RS-232 interface
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SRS SR554 Transformer Preamplifier
- Transformer-coupled input
- 0.1 nV/√Hz input noise
- 0.1 Hz to 40kHz bandwidth
- Gain of 100 or 500
- Single-ended and differential inputs
- >40 dB isolation from DC to 500 MHz
- Powered by SRS lock-in amplifiers
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SRS SR552 BJT Input Preamplifier
- 1.4 nV/√Hz input noise
- BJT input, 100 MΩ input impedance
- Gain of 10, 20, 50 or 100
- Single-ended and differential inputs
- AC coupled input
- Powered by SRS lock-in amplifiers
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SRS SR550 FET Input Preamplifier
- 3.6 nV/√Hz input noise
- FET input, 100 MΩ input impedance
- Gain of 1, 2, 5 or 10
- Single-ended and differential inputs
- AC coupled input
- Powered by SRS lock-in amplifiers
- High common mode rejection
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SRS SR445A Quad 350 MHz Preamplifier
- 4 independent channels
- DC to 350 MHz bandwidth
- 1 ns rise/fall time
- 6.4 nV/√Hz input noise
- Voltage gain to 625
- 50 Ω input and output impedance
- 3 ns overload recovery
- Excellent phase linearity
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