Margules U4Oria: A Closer Way to Listen

November 7, 2026 · by Bruce Ball

From B.A.D.A.S.S. · written by the company, not by Into The HiFi

Margules U4Oria: A Closer Way to Listen The U4Oria pairs the Margules U4 open-back planar magnetic headphone with the Oria personal listening system. The U4 is built around a 70 x 95 mm planar transducer — an ultra-light 21-micron PET diaphragm driven by N50SH neodymium magnets — housed in ear cups machined from single pieces of selected solid wood and finished by hand, with a suspended leather headband, replaceable ear pads, and a 1.5-meter balanced OCC copper and silver cable. The Oria brings source, digital conversion, and tube amplification into a single chassis: a Pure Class A OTL (output transformer-less) tube amplifier with a dedicated EL34 output tube per channel and no global negative feedback, complemented by an integrated high-resolution music server built around the ESS Sabre ES9038Q2M DAC — supporting PCM playback to 768 kHz and DSD512 — with TIDAL Connect, Qobuz Connect, NAS, USB, Internet radio, and Volumio Premium, plus Gigabit Ethernet and dual-band Wi-Fi. A 4-pin XLR balanced output connects the U4 directly, with a 1/4-inch output, analogue line input, and preamplifier output rounding out the system. When combined, the U4 headphones and Oria amplifier/streamer create a whole new experience of listening to music….U4Oria! Both products were developed under Margules’ ANA® (Aligned Neuro-Acoustics) design philosophy: sound understood through human perception — harmonic structure, temporal relationships, tonal integrity, and spatial coherence — rather than specifications alone. The U4 headphone is priced at $3,000 and the Oria amplifier/streamer at $5,000; the complete U4Oria bundle is available for $7,000.