Stratus

Specifications

Price

~$4,300 MSRP for the current Stratus V4, per Head-Fi/headphones.com enthusiast consensus (official site lists no price)

Topology

Purist Class A, single-ended triode (SET), zero feedback, no error-correction circuitry, point-to-point hand-wired

Dimensions

8.5 in H x 17 in W x 14 in D (21.6 x 43.2 x 35.6 cm)

Reputation

Long-running dedicated Head-Fi and headphones.com owner/discussion threads spanning multiple hardware generations

Output tube

2A3 directly heated triode

Power output

1.8 W into 50 ohms; 900 mW into 100 ohms (all XLR/1/4-inch outputs)

Power supply

Quasi-dual-mono, separate filter chokes/capacitors per channel; balanced choke-filtered 2A3 filament supplies

Inputs outputs

50 kΩ input impedance; dual 3-pin XLR outputs, 4-pin XLR ("K1000") output, 1/4-inch TRS output with -6 dB attenuation and selectable 3Ω/115Ω output impedance

Volume control

TKD potentiometer

Output transformers

Custom-made to DNA's specifications in the USA

Other tubes referenced

Stock 6N1P driver; EML 5U4G rectifier and EML 2A3-S upgrade options mentioned by the maker

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