FAQ
TL;DR: STRUMYK is a Raspberry Pi 4 + IQaudIO DAC Pro music streamer that plays 16–24‑bit audio; “The device serves as a music streamer from a home NAS server.” Control comes via Volumio and a 5" DSI touchscreen in a 3D‑printed case. [Elektroda, Pltin74, post #21751719]
Why it matters: This FAQ helps DIY audio fans quickly build, power, and refine a Pi‑based hi‑fi streamer without guesswork.
Quick Facts
- Core platform: Raspberry Pi 4 with IQaudIO DAC Pro HAT in a custom 3D‑printed chassis. [Elektroda, Pltin74, post #21751719]
- Playback: “Full‑HD” 24‑bit/192 kHz capability via the DAC’s spec. [Elektroda, tytka, post #21760329]
- Control: Volumio OS, operable from mobile app or 5" OSOYOO DSI touchscreen. [Elektroda, Pltin74, post #21751719]
- Rear I/O: two switchable RCA pairs, RJ45 Ethernet, power switch, and USB‑C power input. [Elektroda, Pltin74, post #21751719]
- Printing tip: initial PLA lid warped from heat; PETG is recommended for the final top cover. [Elektroda, Pltin74, post #21754159]
What is STRUMYK and who is it for?
STRUMYK is a DIY hi‑fi network streamer using Raspberry Pi 4 and IQaudIO DAC Pro. It targets makers who want an easy NAS or network audio player with a touchscreen and app control, running Volumio inside a 3D‑printed enclosure. [Elektroda, Pltin74, post #21751719]
What audio quality does it support?
The DAC platform supports 24‑bit/192 kHz playback and cites 114 dB SNR with a Burr‑Brown PCM5242. “Full‑HD audio support – 24‑bit/192 kHz playback.” This meets typical hi‑res streaming needs from a NAS or local library. [Elektroda, tytka, post #21760329]
Is anything beyond the enclosure DIY?
No. The author confirms only the chassis is DIY; the electronics (Raspberry Pi, IQaudIO DAC Pro, touchscreen) are off‑the‑shelf modules assembled inside. [Elektroda, Pltin74, post #21751915]
What touchscreen is used and how is it connected?
An OSOYOO 5‑inch display connects via the Raspberry Pi’s DSI interface. This allows native integration with the Volumio UI for local control without extra HDMI cabling. [Elektroda, Pltin74, post #21751915]
What connectors are on the back panel?
The rear panel includes two switchable RCA output pairs, an RJ45 Ethernet socket, a power switch, and a USB‑C power input. This mirrors many commercial streamers while staying DIY‑friendly. [Elektroda, Pltin74, post #21751719]
How do I control playback—phone app or the front screen?
Both. Volumio provides mobile app control, and the 5" DSI touchscreen offers on‑device navigation. You can run headless over the network or interact locally at the unit. [Elektroda, Pltin74, post #21751719]
Is there a cost breakdown or BOM?
A full cost breakdown was not posted. The author shared only a “main parts” snapshot, so pricing remains up to your component sources and printing costs. [Elektroda, Pltin74, post #21751912]
Can I power the Raspberry Pi through the GPIO pins?
Yes, if you use a reliable 5 V supply rated around 3 A or higher. One contributor notes you can safely power the Raspberry via GPIO when using a robust internal PSU. “You can safely power the Raspberry via the GPIO.” [Elektroda, tytka, post #21754632]
Why avoid bypassing the USB‑C power input?
Feeding 5 V directly to GPIO can bypass input protection and USB‑C negotiation. Some adapters may limit current, causing boot failures for the Pi, DAC, and screen. Use a USB‑C extension to the Pi to preserve proper behavior. [Elektroda, oshii, post #21754292]
Which filament should I use for the case?
The early lid printed in PLA deformed from heat. The author recommends PETG for the final top cover to resist warping in warm environments or extended playback. [Elektroda, Pltin74, post #21754159]
Can I hide the front screw heads?
Yes, with countersunk holes or different fasteners. The author kept exposed Allen screws intentionally for the look, but you can redesign for hidden hardware. [Elektroda, Pltin74, post #21751915]
Are more photos or an assembly manual available?
The author posted additional photos of all sides. A detailed assembly manual exists as part of a paid release; buyers of v1.0 get updated files free. [Elektroda, Pltin74, post #21752948]
Does this Volumio setup support YouTube Music?
The thread does not confirm plugin support. A reply links to Volumio’s OEM/custom solutions page; check Volumio’s resources for service‑specific integrations. [Elektroda, thereminator, post #21753498]
How do I set it up quickly?
- Flash Volumio to a microSD and insert it into Raspberry Pi 4.
- Mount the IQaudIO DAC Pro and connect the 5" OSOYOO via DSI.
- Install in the printed case, wire RCA, Ethernet, and USB‑C power, then configure Volumio. [Elektroda, Pltin74, post #21751719]
Will it work with a tube amplifier?
Yes. The author runs STRUMYK into a 6P6S tube amplifier, using the DAC’s RCA outputs. This is a common pairing for line‑level streamers. [Elektroda, Pltin74, post #21751719]
Is 900 Hz a supported rate here?
No. The DAC spec cited in‑thread lists 24‑bit/192 kHz capability. If you need unusual sample rates, confirm in Volumio and the DAC profile first. [Elektroda, tytka, post #21760329]
