Ayon Audio Stratos Tube DSD DAC / Preamp

Ayon Audio Stratos DSD DAC / Tube Preamp

Ayon Audio is pleased to introduce the new “Stratos “ reference DAC. The quad differential gain stage is composed of 2 high performance tubes per channel. The Stratos DAC-Pre combo features a vastly overrated, high capacity power supply for the analog output stage with tube “bridge” rectification, choke coupling and two oversized power transformers. The sound is powerful with fantastic bass speed, extraordinary dynamic, airy, finely detailed and outstanding 3D holographic. The Stratos offers an uncompromising build and reference sound quality level in every aspect.

Manufacturer’s website AYON Audio

Ayon Stratos Specifications

Digital/Analog Converter

Ayon Stratos

Conversion rate

32 bit, PCM up to 192k, 64xDSD, 128xDSD

DAC configuration

16 mono DACs to 2-stereo outs

Tube complement – Analog output


Dynamic range

> 130dB

Output level @1 kHz / Rms


Output impedance  Single-Ended-RCA

~ 300 Ohms

Output impedance  Balanced-XLR

~ 300 Ohms

Digital input

1 x S/PDIF, 1 x AES/EBU, 1 x Toslink, 
1 x BNC, 1 x USB, 1 x I2S, 3 x BNC for DSD

Analog input

2 x RCA & 1 x XLR

Analog output


S/N ratio

> 120 dB

Frequency response

20Hz – 20kHz  +/- 0.2dB

Total harmonic distortion @ 1kHz

< 0.002%

Remote control


Dimension (WxDxH) cm

48x42x11 cm


17 kg

Please find reviews below


„Audiophile-Magazine“ Review

August 2013, France

Conclusion: English Translation
STRATOS is without any doubt one of the best DAC I ever listened to. It makes Music, and in the best possible way. It is comfortable in any situation, from Rock dynamics, to Opera sweetness or Blues laments. With DSD, simply on USB, it takes advantage over SACD players that cost twice or 3 times more. With PCM, Stratos is very close to the wonderful Ayon S5 streamer. Again, it takes advantage over DAC that costs twice or 3 times more. And you get a full preamplifier with the DAC! A close integration between DAC and preamplifier seems to really become a design Must. 
Using Sabre ESS9018 chip, after having mainly used the BB 1704K, Ayon has fully succeeded this transition. Sonic width and depth are even better than their famous CD5S or Skylla II. With the Stratos DAC for Computer Audio, and with the S5 for Network Streaming, Ayon has delivered 2 great Milestones on the 2 roads of “dematerialized” music.

„Haute Fidelite N°2“ Review

July 2013, France

Some review quotes: English Translation
“The Stratos DAC/preamp is among Ayon’s latest designs.

As is now the norm for Ayon the layout brings together tubes and state-of-the-art conversion circuits. It results in one of the most remarkable sound reproductions ever met in a DAC so far.
The Ayon graces us with rich and powerful bass… the percussions in the introduction to Moonlight on Spring River by Zhao Cong explore very low frequencies with formidable articulation.
The tonal rendering is such that you feel as if you were with the artists ; on Ha Vinto Amor Sung by Simone Kermes, the soprano is taking shape before your eyes… you can hear every modulation in her voice and intakes of breath.
The Stratos feels at ease on any transient… like the timpani in Shostakovich’s Eleventh symphony. On It’s Alright with Me by Harry Connick Junior, the singer and musicians have never been placed so clearly in the soundstage.
Ayon’s Stratos DAC is amongst the best converter we have ever tested in this magazine at any price. The Stratos has allured us by its extremely delightful sumptuously transparent and intensely realistic musical rendering,
an investment for music lovers.”

Weight2 kg