# 4220 Bruel & Kjaer Vibration and Sound Used

**Additional Features:**

-   Well defined sound source
-   High calibration level: 124 dB SPL at microphone diaphragm
-   Accurate calibration within +/- 0,2 dB
-   Transistorized frequency control
-   Individually calibrated
-   Battery Operated
-   Fits 1", 1/2", 1/4" and 1/8" microphones 

The Bruel & Kjaer 4220 is a Pistonphone that is a compact battery operated precision sound source. It is designed to enable quick and accurate overall calibration of sound measuring equipment. It provides a sound pressure level of 124 dB at a frequency of 250 Hz.

## Details

- **Price:** 0.0 USD
- **Vendor:** Bruel & Kjaer
- **Type:** Vibrat
- **Tags:** Bruel & Kjaer, Manufacturers, Other Equipment, product_manual_group_1, Product_used, Vibration & Sound

## Variants

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

## Images

- 4220 Bruel & Kjaer Vibration and Sound Used

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> Source: [ValueTronics](https://valuetronics.com/products/4220-bruel-kjaer-vibration-and-sound-used)
> Updated: 2026-05-21