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Preamp Q8 Desktop DAC Preamp Development Log

Fosi Audio Team

Administrator
Staff member
Hi Fosiphiles,

We’re thrilled to officially kick off this thread with exciting news: Q8, one of our most anticipated upcoming products, is finally in development!

Born out of last year’s anniversary co-creation campaign with our community, Q8 is a product that truly embodies your ideas, feedback, and passion. In this thread, we’ll be sharing the latest updates on its progress — from early design concepts to engineering breakthroughs.

As always, your voice matters. The Fosi product team will be here to listen, discuss, and explore your suggestions. Whether it’s a technical detail or a user experience insight, your feedback will help us refine Q8 into something extraordinary.

Brief Introduction:
The Q8 is a multi-input, multi-output DAC preamplifier equipped with both LPF and HPF functions. Designed for users with multiple audio sources or AVR systems, it serves as a powerful system control hub that brings all your devices together seamlessly. It also helps AVR users build a dedicated 2.1 HiFi system with ease and flexibility.

Here is the rendering sketch of the Q8
1749114725618.png

Basic Specs
Input:USB-C, Optical, Coaxial, Phono RCA, RCA*2, Sub-In, HDMI Arc with CEC, Bluetooth
OutputRCA, XLR, Sub-Out
TriggerIn and Out
FunctionsLPF, HPF, Tone Control with Bypass, EQ
In-Built DACAKM AK4493S
Sampling Rates32bit/768kHz+DSD512(USB), 24bit/192kHz(OPT, COA, HDMI), 24bit/96kHz(BT)
Bluetooth ChipQCC3095
Bluetooth CodecsAAC, SBC, aptX, aptX-HD, aptX-LL, aptX-Adaptive, LDAC,aptX Lossless
Remote Control✅

Product Manager in Charge: @Charles

Let’s continue building it together!
 
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What happened, Team Fosi??? Did you interfere with my dreams?
I think that nowadays, having a device that makes implementing a 2.1 system easier is mandatory. I really wouldn't change ANYTHING. I just hope it has a volume control with a maximum and minimum (I really hate the infinitely rotating ones).
I think the choice of the AKM DAC chip, the inputs and outputs (an additional optical one wouldn't hurt, as Jimbob points out), the internal power supply, the master switch on the back, the triggers are totally right.
And of course, the icing on the cake: the HPF and LPF filters.
P.S. The size and aesthetics are perfect! Is it a rack unit? Looking at the front, I'd just put an on/off button on the front as well.
In any case, it's all good news. I look forward to further developments regarding this development.
Cheers, Team!
 
The unit looks great and not many changes recommended physically other than the ones suggested above. In terms of the display when used as preamp it should show the volume in large font for easy reading from a distance. Hope it comes with a basic remote for changing volume and input selection.
 
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