It is spec'd as flat from DC to 20kHz. I haven't measured it. I was looking for it this morning and was going to bring it to work, but I picked the wrong audio box to look through. My current signal chain is down .8 dB at 10 Hz and 2.7 dB at 5 Hz. I'll insert the Matchbox HD in the signal chain and do a loopback test with REW to see if anything changes.
High Impact AV
- ISF Level II Video Calibrator, THX-HAA Level III Audio Designer/Calibrator
- Colorimetry Research CR-250 Spectroradiometer & CR-100 Colorimeter, Klein K10-A
- Murideo Fresco SIX-G/SIX-A Generator/Analyzer (HDMI 2.x, HDR, UHD)
- ACO Pacific and Earthworks Class 1 microphones