Contour Guide Devices Install 中文
FiiO and SnowSky: PEQ on Android with Contour EQ or FiiO Control
Contour EQ is a free, open-source Android app that reads and writes the parametric EQ stored inside four DACs that use the FiiO protocol: the FiiO KA15, the FiiO K13 R2R, the SnowSky Melody and the SnowSky Tiny A.
FiiO's own tools for all four are the FiiO Control app and FiiO's web app. This page sets out what Contour does on each DAC, where FiiO's tools do more, and how the two get along on one phone.
Stable 1.6.6
What Contour does on each DAC
Confirmed on real hardware. Every send is read back from the DAC. On the KA15 and the K13 R2R the EQ is confirmed to stay after unplugging.
| DAC | Where the EQ goes | Bands, gain, preamp | DAC page | Tested |
|---|---|---|---|---|
| FiiO KA15 | USER1 to USER3, named after the profile | 10 bands, -12 to +12 dB, preamp -24 to 0 dB | Yes, with FACTORY RESET | Developer, hardware and test rig, October 2026, firmware 1.1.6 |
| FiiO K13 R2R | USER1 to USER10 | 10 bands, -24 to +12 dB, preamp -24 to +12 dB | Not yet | Developer, hardware and test rig, October 2026, firmware 1.15 |
| SnowSky Melody | USER1 to USER3 | 10 bands, -12 to +12 dB, preamp -12 to +12 dB | Yes, with FACTORY RESET | Developer, hardware and test rig, October 2026, firmware 1.2.0 |
| SnowSky Tiny A | USER1 to USER3 | 10 bands, -12 to +12 dB, preamp -12 to +12 dB | Yes, no factory reset | Developer, hardware and test rig, October 2026 |
- Filters on all four: PEAK, LOW SHELF, HIGH SHELF, LOW PASS, HIGH PASS, BAND PASS and ALL PASS.
- Q 0.1 to 10 (KA15 shelves up to 7.07), frequency 20 Hz to 20 kHz.
- The DAC page holds the DAC's own settings, such as VOLUME and BALANCE. USB AUDIO is shown there but not changed.
Where FiiO's tools do more
FiiO Control and FiiO's web app at fiiocontrol.fiio.com are the maker's tools, and they cover things Contour does not.
- Firmware. FiiO publishes firmware updates for these DACs; Contour does not update firmware. For the Melody, FiiO's instructions use a Windows upgrade tool or the web version in Chrome, Edge or Opera on a computer. FiiO posted firmware V1.3.0 for the Tiny A on 20 October 2026. On the K13 R2R, two parts update from a computer and the Bluetooth part from the FiiO Control app.
- Stock presets. FiiO's tools switch to the built-in EQ presets: seven on the Tiny A (Jazz, Pop, Rock, Dance, R&B, Classical and Hip-Hop). Contour works with the USER slots; on the K13 R2R, BYPASS and the stock presets are chosen on the K13 itself.
- Sharing curves. FiiO's apps export, import, share and save EQ curves, including tunings FiiO recommends.
- The K13 R2R over Bluetooth. FiiO Control reaches the K13 over Bluetooth only, and there it also sets the input source, the lights, the device name and Clear pairing. Contour has no DAC page for the K13 yet.
- Model-specific settings. FiiO lists a theme among the KA15's app settings, which Contour's DAC page does not have. FiiO Control switches the UAC mode (USB AUDIO) on the KA15 and the Tiny; FiiO says UAC 1.0 makes the Tiny easier to use with consoles such as the Switch and PS5. Contour shows USB AUDIO read-only.
- A computer. FiiO's web app runs on Windows and macOS in Chrome, Edge or Opera. Contour runs on Android only.
Where Contour fits
- Your profiles live in a library on the phone, ready for any of the ten supported DACs, with no internet and no account.
- AutoEQ and squig.link profiles go in with PASTE or OPEN FILE: load an AutoEQ or squig.link profile into your dongle.
- On the KA15, FiiO's app shows the values the KA15 stores, so its shelf Q and preamp look higher than what the KA15 plays. Contour compensates both, so the curve and the preamp it shows are what the KA15 plays.
- FiiO's tools offer no factory reset for the KA15. Contour's DAC page has FACTORY RESET, which saves a copy of your slots and settings first.
Both apps on one phone
Close FiiO Control before you use Contour with a Melody: while FiiO Control runs in the background it holds the Melody, and Contour cannot connect.
After you plug the DAC in, Contour reads every USER slot, so an EQ saved with FiiO's tools shows up in Contour. If it is not in the Library yet, Contour adds it as a new profile.
On an iPhone, FiiO says iOS devices cannot control the Melody through FiiO Control, and FiiO Control's KA15 control works only in the Android app. The EQ saved in the DAC still plays on an iPhone.
Device pages
Questions
Does Contour replace FiiO Control?
For the EQ on these four DACs, it can: Contour reads and writes the 10-band EQ and the preamp in the USER slots. For firmware updates, stock presets, the K13 R2R's Bluetooth settings and switching USB AUDIO, use FiiO's tools.
Can I use both apps?
Yes. Contour reads every USER slot when you plug the DAC in, so it sees what FiiO's tools saved. With a Melody, close FiiO Control first, or Contour cannot connect.
Does the EQ work on a PC or an iPhone?
Yes. The EQ is stored in the DAC; FiiO says PEQ saved from Android also applies when the Tiny A is used with an iPhone, and on the KA15 it plays on PCs, Macs and iPhones. You need an Android phone only to change it with Contour.