The Stanford Research Systems SR560 Low Noise Preamplifier is a low noise and a high performance preamplifier. This product provides applications such as low temperature measurements, audio engineering, and optical detection. The preamplifier is a battery operated device that can provide up to 15 hours of worth of use. 

Specification:

- Inputs AC or DC coupled, single-ended or differential
- Maximum input 3 Vpp
- Gain stability 200 ppm °C
- Bandwidth –3 dB at 1.2MHz (typ.)
- Flatness ± 0.3 dB - 300 kHz 
- Dimensions (W x H x D): 8.3 x 3.5 x 13 in.
- Weight: 15 lbs