Resolut USB-IN HQ Review: Wired USB Audio for Resolut Processors, Explained
Updated: Oct 7
The Resolut USB-IN HQ is a plug-in module that gives Resolut's standalone processors a USB 2.0 digital audio input on a USB-B socket, so a music player, smartphone, car PC or compatible head unit can send audio straight into the processor's digital section. Resolut says three crystal oscillators keep the data accurately clocked and that the signal reaches the DSP without additional conversion. Its India MRP is ₹54,990, and Resolut lists it for the A-DSP, T-DSP mk2, H-DSP and M-DSP. It suits owners who want a wired digital link from a dedicated player, phone or car PC. Our USB-IN HQ product page has today's price.
Quick summary
A USB 2.0 audio input on a USB-B socket for players, phones, car PCs and some head units.
Resolut doesn't publish a maximum bit depth or sample rate; the 32-bit/192 kHz figure on our listing isn't on Resolut's page.
It doesn't charge the connected device, so plan a separate charger for long drives.
For the A-DSP, T-DSPmk2, H-DSP and M-DSP; the X8-DSP and X12-DSP BT have USB built in.
Resolut USB-IN HQ specifications
Specification | Resolut USB-IN HQ |
|---|---|
Type | Plug-in USB digital audio input module |
USB | USB 2.0, USB-B connector |
Sources named by Resolut | Players, smartphones, car PCs, some head units |
Clocking | Three crystal oscillators |
Charges connected device | No |
Maximum audio format | Not published by Resolut |
Dimensions | 64 x 26 x 10 mm |
Compatible processors | A-DSP, T-DSP mk2, H-DSP, M-DSP |
India MRP | ₹54,990 |
Figures come from Resolut's USB-IN HQ page.
Why a USB input, when the processor has optical?
Resolut's standalone processors already have coaxial and optical inputs, which suit a head unit or player with an S/PDIF output. Many phones, music players and car PCs, however, put out digital audio only over USB. The USB-IN HQ takes that signal directly, and Resolut says the audio passes into the processor in digital form without additional conversion, clocked by three crystal oscillators.
Resolut's T-DSP mk2 page explains the thinking behind its modules: USB audio modules based on Amanero or XMOS chips connect directly to the processor's main DSP and are managed by a 32-bit coprocessor, with no conversions that reduce resolution. It doesn't say which chip the USB-IN HQ uses. The processors it fits all work at 192 kHz/64-bit internally.
What Resolut doesn't publish
Resolut's page gives no maximum bit depth or sample rate, doesn't mention DSD and gives no driver information. Our own listing quotes playback up to 32-bit/192 kHz, but we couldn't find that figure on Resolut's page or at the Moscow dealer we checked, so treat it as unconfirmed. If your library includes very high sample-rate or DSD files, ask us to confirm what will play before you buy.
Sources and cables
The module's socket is USB-B, the squarish connector used by many audio devices, so you'll need a cable that suits your source. Most phones need an OTG-capable cable or adapter to output digital audio over USB, and a dedicated player or car PC may simply need a standard USB cable. Because the module doesn't charge the connected device, a phone used as the source for long trips needs its own charger. Resolut also names some head units with a USB digital audio output as possible sources; check yours with us first.
What owners and reviewers say about the Resolut USB-IN HQ
We found no owner reviews of the USB-IN HQ when we checked in October 2026. The Moscow dealer Magnitolkin's USB-IN HQ page says there are no reviews yet and lists the same basic specifications as Resolut, with no maximum format. The SoundDrive Resolut listing shows no ratings, and Drive2, where Russian installers post build logs, blocked our access. Everything above is based on Resolut's published information. If you use one, tell us how it works with your player.
USB-IN HQ vs other ways to get digital audio in
Resolut's own alternative is the BT-IN (₹54,990), which Resolut says supports aptX Lossless for CD-quality streaming from compatible phones; Resolut's page names no other codec, though our BT-IN listing also lists SBC, aptX and aptX HD. The USB-IN HQ is the wired route, and Resolut says the audio reaches the processor in digital form without additional conversion.
You can also feed the processor's existing optical input. Alpine's UTS-A100 (₹48,999) accepts USB audio from a phone at up to 192 kHz/32-bit and has optical and coaxial outputs up to 192 kHz/24-bit, while Zapco's Z-OTG-OPT (₹6,990) converts a phone's USB-C OTG output to optical. Both have published format details, which the USB-IN HQ lacks, though they add a conversion step and another box. If you haven't chosen a processor yet, the X8-DSP and X12-DSP BT have USB built in.
Who should buy it, and who shouldn't
Buy the USB-IN HQ if you have an A-DSP, T-DSPmk2, H-DSP or M-DSP, your music lives on a player, phone or car PC with USB audio output, and you want a wired digital path that Resolut says reaches the processor without additional conversion.
Skip it if your source already has an optical or coaxial output, you mostly stream casually from a phone, or you need a confirmed maximum format before buying. X8-DSP and X12-DSP BT owners don't need it, and Resolut doesn't list it for the standard X12-DSP.
Installation notes for Indian cars
The processor usually sits under a seat or in the boot, while the source lives in the cabin, so plan the USB cable route early. Passive USB 2.0 cables are generally limited to about 5 metres, which can be tight from dashboard to boot in larger cars. Run the cable away from power wiring, secure the connector so rough roads don't work it loose, and keep the player or phone out of direct sun on the dashboard in summer. Our guide to setting up a DSP in your car covers source selection and levels. VA3 Car Studio in Ghaziabad can fit the module with the processor.
Price and where to buy
The Resolut USB-IN HQ has an MRP of ₹54,990. Check today's price on our USB-IN HQ listing, and tell us your processor and source so we can confirm the setup and cable.
The bottom line
The USB-IN HQ gives Resolut's standalone processors the wired USB input that many players, phones and car PCs need, with Resolut's direct digital path and triple-oscillator clocking. Its weakness is information: Resolut publishes no maximum format, and the module doesn't charge your device. For a USB source feeding an A-DSP, T-DSPmk2, H-DSP or M-DSP, it's Resolut's own wired route, but confirm the formats you need before you buy.
Resolut USB-IN HQ FAQ
What audio formats does the Resolut USB-IN HQ support?
Resolut doesn't publish a maximum bit depth, sample rate or DSD support. It describes a USB 2.0 input that passes audio to the processor digitally without additional conversion. Ask us to confirm your files before buying.
Will the USB-IN HQ charge my phone?
No. Resolut states that the module doesn't charge the connected device, so a phone used as the source on long drives needs a separate charger.
Which processors take the USB-IN HQ?
Resolut lists the A-DSP, T-DSP mk2, H-DSP and M-DSP. The X8-DSP and X12-DSP BT have USB built in, and Resolut doesn't list USB on the standard X12-DSP.
Buy the Resolut USB-IN HQ Hi-Res USB Audio Input Module in India
Check the Resolut USB-IN HQ Hi-Res USB Audio Input Module price in India, browse more Resolut DSP processors or compare all car DSP processors in India. Want it fitted properly? Book DSP installation and tuning at our Ghaziabad studio.
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