# SR552 Stanford Research Preamplifier Used

**Additional Features:**

-   1.4 nV/√Hz input noise
-   BJT input, 100 kΩ input impedance
-   Gain of 10, 20, 50 or 100
-   Single-ended and differential inputs
-   AC coupled input
-   Powered by SRS lock-in amplifiers

The SR552 Voltage Preamplifier is designed to work with SRS lock-in amplifiers, providing gain where it is needed most—right at the experiment. The preamplifier minimizes noise and pickup in the connecting ines and can reduce measurement time in noise-limited experiments. The SR552 differs from the SR550 in its bipolar front-end design. 

The SR552 has a lower input noise and a correspondingly lower input impedance (100 kΩ vs. 100 MΩ) than the SR550. When used with the SR510 or SR530, the preamplifier gain is automatically set by the lock-in. When used with the SR850, SR810 or SR830, the gain is always set to 100. Power and control signals are brought from the lock-in by a 9-pin cable (included). The SR552 may also be operated independently by applying appropriate power supply voltages (±20 VDC, +5 VDC).

## Details

- **Price:** 0.0 USD
- **Vendor:** Stanford Research
- **Type:** Pre Amp
- **Tags:** Amplifier, Manufacturers, Other Equipment, Preamplifier, product_manual_group_1, Product_used, Stanford Research

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.00 USD | In stock |

## Images

- SR552 Stanford Research Preamplifier Used

---

> Source: [ValueTronics](https://valuetronics.com/products/sr552-stanford-research-preamplifier-used)
> Updated: 2026-05-21