Stanford Research Systems SR560 Low-Noise Voltage Preamplifier (Pre-Owned)

Key Features At A Glance

• Low-noise differential front-end: 4 nV/√Hz input noise at 1 kHz with 100 MΩ input impedance
• Variable gain from 1 to 50,000 in a 1-2-5 sequence, with 0.5% vernier gain adjustment
• DC to 1 MHz bandwidth; –3 dB at 1.2 MHz typical, ±0.3 dB flatness to 300 kHz (gains up to 1000)
• Two configurable first-order RC filters: low-pass, high-pass, or band-pass; cutoffs 0.03 Hz to 1 MHz
• AC- or DC-coupled, differential or single-ended inputs with fully floating BNC connections
• Line or battery operation — three rechargeable lead-acid batteries provide up to 15 hours
• RS-232 interface (9600 baud, receive-only) controls up to four units from one computer
• Dual 600 Ω and 50 Ω outputs drive 10 Vpp; rear-panel ±12 VDC @ 200 mA bias supply

The Stanford Research Systems SR560 is a high-performance, low-noise voltage preamplifier built around a differential front-end. It is designed to recover small voltage signals from the noise floor across a wide range of measurement work, offering selectable gain, configurable signal filtering, and the choice of line or battery operation in a single bench instrument.

The SR560 is suited to a wide range of applications, including low-temperature measurements, optical detection, and audio engineering. Its combination of low input noise, broad gain range, and front-panel signal filtering lets an engineer condition a weak signal before it reaches the downstream instrument in any of these measurement contexts.

ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units leave factory-sealed exactly as received from the manufacturer.

Product Core & Specifications

Important: Maximum input: 3 Vpp.

Usage tip: the SR560 accepts the O560RMS single and O560RMD double rack-mount kits for rack installation, and the O560SB spare battery set (three batteries).

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.