Roon capping Eversolo DMP-A6 Gen 2 at 384 kHz despite hardware support for 768 kHz (ref#QDNQ5H)

[OneEyedHito]

What’s happening?

· Other

How can we help?

· How do I ...?

Other options

· Other

Describe the issue

Thanks for the specifics—Roon 2.47 and Eversolo DMP-A6 Gen 2 on firmware v1.4.02. I’ll update the query with those details for accuracy. Since Roon’s versioning typically uses build numbers (e.g., 2.0 build 1432), I’ll assume “2.47” might be a typo or a custom notation—most likely you mean Roon 2.0, build 1447 or similar, as builds in the 1400s align with early 2025 releases. You can confirm this in **Settings > About**. For now, I’ll craft the post with placeholders and notes for you to double-check.

Here’s the revised query for the Roon Labs Community Support section:

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**Title**: Eversolo DMP-A6 Gen 2 Capped at 384 kHz in Roon—Hardware Supports 768 kHz

**Body**:
Hi Roon team and community,

I’m hitting a wall with Roon capping my Eversolo DMP-A6 Gen 2 at 384 kHz, even though its hardware supports PCM up to 768 kHz. Looking for help or a profile fix.

**Setup**:
- **Roon Core**: Mac mini M4 (16 GB RAM), Roon version 2.47 [I assume this is 2.0 build XXX—please confirm exact build in Settings > About, e.g., 2.0 build 1447].
- **Endpoint**: Eversolo DMP-A6 Gen 2, firmware v1.4.02 (latest as of March 2025), Roon Ready via RAAT.
- **Output**: Analog outs (RCA) to JDS Labs Atom 2 Headphone Amplifier.
- **Playback Chain**: Mac mini → DMP-A6 (network) → Internal DAC → Analog to Atom 2.

**Issue**:
- In **Settings > Audio > Device Setup** for the DMP-A6 zone, the “Maximum Sample Rate (PCM)” dropdown maxes out at 384 kHz.
- In **DSP Engine > Sample Rate Conversion > Custom**, the dropdown also stops at 384 kHz—no 705.6 kHz or 768 kHz options are available.
- Signal Path shows upsampling capped at 384 kHz, whether I use “Max PCM Rate” or Custom settings.

**Problem**:
The DMP-A6’s internal DAC (dual ESS ES9038Q2M) supports PCM up to 768 kHz via analog outs, per Eversolo’s official specs and user reports (e.g., Head-Fi). Firmware v1.4.02 should be current as of March 20, 2025, and my Mac mini M4 has ample power for upsampling. It looks like Roon’s RAAT profile for the DMP-A6 Gen 2 is incorrectly locking it at 384 kHz, restricting both Device Setup and DSP options.

**What I’ve Tried**:
- Set 384 kHz in DSP Custom—works fine, audio plays, Signal Path confirms 384 kHz output.
- Disabled/re-enabled the DMP-A6 zone in Roon and power-cycled the device—no change.
- Verified firmware—v1.4.02 is the latest per Eversolo’s update check.
- No 768 kHz option appears in either Device Setup or DSP Custom dropdowns.

**Request**:
- Can Roon confirm if the DMP-A6 Gen 2’s RAAT profile is set to a 384 kHz max?
- If so, can it be updated to reflect the 768 kHz capability of the internal DAC via analog outs?
- Any workarounds to force 768 kHz in the meantime (e.g., DSP override)?

Describe your network setup

Hardwired ethernet

[CrystalGipsy (Resisting the flow!)]

It doesn’t support 768 via Roon, Eversolo limited it as it did not pass certification above that resolution so they decided to limit it 384/24. Only via internal DAC or eversolos own player will it work higher. Likey network or sync issues with higher resolutions. You can find posts on their own Zidoo forum about this.

[OneEyedHito]

Thank you for being smarter than AI, I appreciate the reply. I’ll stop banging my head against the wall now.

[Burkhardt_Petermann]

What you can do:

• use it as USB Dac from a Roon endpoint
• use DSD, here you can use (at least with the internal DAC) DSD512 through Roon.

[Anthony_B (Tony)]

Does it state the limitation anywhere in the specs for the unit or do you have to find out the hard way? Does the limitation also apply to other Ethernet protocols ie Upnp?

[OneEyedHito]

Support DSD512 Native, PCM768KHz@32Bit, MQA full decoding.

This is what Eversolo publishes the specs at.

[OneEyedHito]

Thank you for the reply, will consider it as an endpoint from either my MM or an iPad.

[Anthony_B (Tony)]

Yes they do but they are being economical with the truth if there are limitations via different interfaces. They do state the expected limits via co-ax and optical for instance but a user would have no reason to expect that Ethernet input is limited in some way. All limitations should be clearly shown in the specifications.
That is why I asked asked about UPNP. Is it an Ethernet interface limitation or a Roon Ready Limitation?

[OneEyedHito]

That is great points and a good question still @Anthony_B, I will do some more digging.

[ExUnoPlura (Mark)]

I had the same issue with Matrix Audio’s mini-i Pro 4. Specs and Roon performance on 768 did not match.

[OneEyedHito]

Now that I think about it I had the same issue on that streamer too.