Volumio Rivo Network Audio Streamer Lab Report

Lab Report

Most network bridge devices we've tested over the last few years – including Aurender's W20SE [HFN Mar '23], Grimm Audio's MU1 [HFN Dec '20], the Innuos Statement [HFN Jan '20], Auralic Sirius G2.1 [HFN Oct '22] and Antipodes Oladra [HFN Aug '23] – have fallen firmly into the 'high-end' category. Volumio's Rivo is, by contrast, a more compact and affordable transcoding/signal conditioning unit running custom software but fed from an outboard 'wall wart' PSU. In practice, the Rivo's data reclocking/buffering yields generally positive results although its jitter suppression via either galvanically-isolated USB or S/PDIF outputs is not quite to the level achieved by those far costlier hardware solutions with – crucially – their upmarket onboard PSUs.

Tested in as 'straight' a mode as possible via a local SSD/USB drive (Volume Normalisation, Mixer and Resampling all set to 'Off'), the Rivo's boost to performance was inferred via several outboard DACs including iFi Audio's NEO iDSD [HFN Mar '21], Mytek's Brooklyn [HFN Aug '17] and the dCS Vivaldi APEX [HFN Jun '22]. AudioQuest's budget DragonFly [HFN Mar '14] – a USB hub-powered DAC – provides a good indication of incoming data integrity and noise on the +5V supply, and here the Rivo halved the 300psec jitter seen via a standard PC USB source to 135psec (<100psec is possible). Circulating interference/noise was also squeezed [see Graph 1, below], boosting the DragonFly's A-wtd S/N from a sub-16-bit 94dB to a 17-bit 103.7dB.

Similarly, the repeating ±33/66Hz/99Hz sidebands seen from iFi Audio's NEO iDSD were reduced from 550psec to just 18psec (<5psec is possible) via the Rivo [see Graph 2]. Furthermore, with the Rivo's 'Resampling' engaged (quality set to 'Very High'), jitter was almost unchanged at 19psec via USB but actually deteriorated to ~600psec via S/PDIF. Finally, both the dCS and Mytek DACs provide full galvanic isolation/onboard reclocking, so very little difference in their inherent ~10psec jitter was detected. As usual, budget DACs are the greater beneficiary. PM


48kHz/24-bit jitter spectra from AudioQuest's DragonFly (via Volumio Rivo, black w/mkrs; via PC, red)


48kHz/24-bit jitter spectra from iFi Audio's NEO iDSD DAC (via Volumio Rivo, black; and PC, red)

Digital inputs 1x Ethernet; 1x wireless; USB 2.0/3.0
Digital outputs 1x USB-A 2.0; 1x coaxial; 1xAES/EBU
Digital jitter (AQ DragonFly) 135psec (300psec via PC USB)
Digital jitter (iFi Audio NEO iDSD) 18psec (550psec via PC USB)
Digital jitter (Mytek Brooklyn) 10psec (8psec via PC USB)
Power consumption 4W (1W standby)
Dimensions (WHD) / Weight 335x110x205mm / 2.25kg
Price €989

Volumio Srl
Firenze, Italy
Supplied by: Volumio Srl