Contour Guide Devices Install 中文
CrinEar Protocol Micro EQ app for Android
Contour EQ is a free, open-source Android app that reads and writes the parametric EQ stored inside the CrinEar Protocol Micro. The EQ stays in the dongle, so it works in every app and on every device you plug it into.
Stable 1.6.6
What Contour does on the Protocol Micro
| Supported since | Contour 1.0 |
|---|---|
| USB ID (VID:PID) | 3302:C20F |
| Chip / protocol | WalkPlay |
| EQ | Read, import and write; every send is read back from the DAC. A/B compares the EQ off and on. |
| Bands | 8 |
| Filter types | PEAK, LOW SHELF, HIGH SHELF, LOW PASS, HIGH PASS |
| Gain | -10 to +10 dB |
| Q | 0.1 to 10 |
| Frequency | 20 Hz to 20 kHz |
| Preamp | -30 to 0 dB, whole dB |
| Where the EQ is kept | In the DAC's memory: one EQ, no slots. It stays after unplugging. |
| Tested | By the developer on hardware and on a test rig, September and October 2026, firmware 0.2. |
What Contour does not do on the Protocol Micro
- Firmware updates.
- A positive preamp. The Micro accepts one but does not get louder, so Contour offers none.
- The DAC's own settings and hardware volume. They would need the WalkPlay web tool of the chip's maker, which Contour has no access to.
- Resetting the DAC.
Contour EQ and CrinEar's EQ.Hangout.Audio tool
CrinEar's own tool for the Protocol Micro is EQ.Hangout.Audio, a desktop browser tool. Contour started in September 2026 as a phone stand-in for it. EQ.Hangout.Audio runs on a computer, which Contour does not: Contour runs on the Android phone the dongle is plugged into. Both work with the Micro's 8 bands, and neither has a reset or a volume control. Contour keeps your profiles in a library on the phone and needs no internet or account.
Using Contour with the Protocol Micro
- Send a profile with HOLD TO SEND. Contour reads every band back from the DAC, and the EQ stays in the Micro after unplugging.
- HIGH SHELF works too. The Micro has no real high shelf, so Contour sends a mirrored LOW SHELF plus preamp, which gives the same curve.
- Tap A/B while the profile is ON DAC to hear the curve off and on at the same volume. A/B never saves anything to the dongle: its temporary change is gone after unplugging.
Everything else works the same on every DAC: How to use Contour.
Questions about the Protocol Micro
Is there an EQ app for the CrinEar Protocol Micro on Android?
Yes. Contour EQ reads and writes the Protocol Micro's 8-band EQ and preamp from an Android phone. It is free and open source (Apache 2.0). CrinEar's own tool for this DAC is EQ.Hangout.Audio, a desktop browser tool.
Can I read the PEQ that is already on the Protocol Micro?
Yes. Contour reads the Micro's 8 bands and preamp, and FROM DAC (the + card in the Library) saves what the DAC holds right now as a new profile. Nothing on the DAC changes until you hold HOLD TO SEND.
Protocol Micro specs and prices on soundblooms.com