BSS has been a leader in Dynamics and Equalizers for quite some time, but what happens when you combine the two? You wind up with the BSS DPR-901II Dynamic Equalizer.
A Dynamic Equalizer? Yup. Also known as a multi-band compressor…

I’ve had a few chances to get my hands on this unit, and I’ve always been happy with it. On Vocals, on Guitars… It’s a winner.
Here’s the broad look.
- 1 Rack Space
- In/Out Switch
- Master Metering
- 4 Bands
- The Ability to Split the unit into 2 x 2 channels
And Each Band has…
- In/Out Switch
- Center Frequency Rotary
- Freq Q Rotary
- Ch 1 and Ch 4 Have Switchable Shelfing
- Comp or Expander Rotary
- “Below” Activation (to Activate Expander)
- Threshold Rotary
- Fast Release Activation
- Metering for Main, Compression, and Expansion
- When in Split Mode CH 2/3’s Filters are canceled for wide band operation
All Inputs and Outputs on this unit are balanced XLR, with 1 in 1 out for the mains, or 2 in 2 out when in split mode.
When used live, I would suggest using this before a straight compressor, using the 901II for it’s true purpose, a dynamic equalizer, and the straight compressor for over-all dynamic control.
Also, this unit has proven fantastic at excentuating an airy or whispery quality in one’s voice.





