In Barn for Review: Feliks Audio Arioso 300B Integrated Amplifier

300Bs, baby.

The Feliks Audio Arioso 300B Integrated Amplifier is bit of a beast, weighing a hefty 68 lbs. of Class-A single-ended triode power. That’s 8 Watts per channel of output power from a pair of included Electro-Harmonix Gold 300Bs, joined by CV 181-TII (“golden” PSVANE 6SN7) driver tubes and a 5C3S (NOS) rectifier.

Around back reside 4 and 8 Ohms taps, 3 single-ended RCA inputs, power switch, and IEC receptacle.

the tubes self bias

The entire amplifier circuit is built using the point-to-point method. It features selected high-quality components, for example the motorized blue ALPS potentiometer (for remote control), “Hi End” class transformers from Mr. Ogonowski, “red Jantzen” coupling capacitors, Caddock film resistors.

Feliks Audio hails from Lubliniec, Poland and the line is distributed in the USA by Upscale Audio. It has been some time since I had a SET amp in Barn, especially one sporting the venerable 300B, so I very much look forward to hearing that kind of power push the DeVore Fidelity O/96 around. If only more people would embrace less power…

Stay tuned!

a wooden remote is also included

Feliks Audio Arioso 300B Integrated Amplifier
Price: $6699

Manufacturer’s Website: Felix Audio
US Distributor’s Website
: Upscale Audio


Output power: 2 x 8 W
Frequency range: 15 Hz – 32 KHz +/- 3 dB
Inputs: 3 x RCA line
Input sensitivity: 1 V RMS
Input impedance: 100 kOhm
Loudspeaker outputs: 4 and 8 ohm
Dimensions (incl. tubes): 16.1″ x 13″ x 8.3″
Weight: 68 lb