Sophia Electric 91-01 300B monoblock power amplifier Specifications

Sidebar 1: Specifications

Description: Single-ended, tubed, monophonic power amplifier with 4 and 8 ohm output transformer taps. Tube complement: one 6SN7, one 300B, one 5Z3PA rectifier. Maximum output power: 9W into 8 ohms at 1kHz (9.5dBW). Input impedance: 200k ohms. Input sensitivity for maximum output: 500mV. Output impedance: not specified. Distortion: 0.18% at 1kHz (level not specified). Frequency response: 12Hz–35kHz, ±3dB.
Dimensions: 12.75" (325mm) W by 7.25" (185mm) H by 9.5" (245mm) D. Weight: 35 lbs (15.9kg).
Serial numbers of units reviewed: 002224, 002225, 002248, 002249 (auditioning); 002248, 002249 (measuring).
Price: $4999/pair. Approximate number of dealers: sold direct (but see text). Warranty: 1 year, parts & labor; Sophia Electric tubes, 1 year; non-Sophia tubes, 6 months.
Manufacturer: Sophia Electric, 1952 Gallows Road, Suite 214, Vienna, VA 22182. Tel: (703) 992-8546, (703) 204-1429. Fax: (703) 560-3502. Web:

Sophia Electric
1952 Gallows Road, Suite 214
Vienna, VA 22182
(703) 992-8546

wtrp's picture

Enjoyable reading for sure.  I'm glad that you compared the entry level Sophia's to a mid-upper model range of the Shindo corton-charlemagne.  That's like say a huge price difference from Sophia's $5k/pair to Shindo's $10k+.  

If the only difference in the end is only a slight "sparkle" here and there or more "natural" here and there then I'm not sure if which has the best bang for the buck? Instead of repeatedly smelling the amplifier, a better test would be to do a blind listening session held by a third party to see if you can still smell the amplifiers from 7-10 feet away and pick out which amp Sophia or Shindo is running.  For the majority of audiophiles out there, in the end is this:  are you listening to the music at an emotional level or simply listening to the eye candy equipment?