Sophia Electric™ Model 91-03/05 300B Dual-Mono Stereo Tube Amplifier
Sonic Purity * Super Quietness * Sonic Magic and Musicality
Sophia Electric’s competitive advantages come from superior propriety output transformers and carefully voiced driver circuit module designed by Dr. DWU and Richard Wugang.
1. Sonic Purity: Voice from heaven, anything less pure is pollutive coloration.
2. Super quietness and dynamic range: Totally jet black background that made this 8 watts output sound like thunder when team up with good efficient speakers(Please check out SET Princess model I speakers for modest budget and Princess horn speakers at high end budget).
3. Musicality and Sonic Magic: Without musicality, it would be just cold man-made machine. Sophia Electric amplifiers are proud for superior musicality and sonic magic that would make you listen to your discs again and again.
4. First class resolution: you can hear almost every voice from a grand choir group, not by brightness, but through the intrinsic native resolution power of the great amplifier.
5. Excellent extension on bass and on high frequency: this Sophia Electric single ended 300B amplifier can deliver superior bass extension without losing mid-range magic and high end extension through Sophia Electric in house made output transformers.
1. High end aluminum alloy Chassis with world class of precision and artistic ascetics.
2. Sophia Electric in-house made transformers are being used to deliver the best possible single ended circuit sonic magic.
3. Proprietary driver circuit potted in an in-house made metal case epoxy potted module.
4. Combinations of variety audiophile brand parts are being used through out.
5. Sophia electric Princess mesh plate 300B tubes are the stock output tubes. Sophia Electric 6SN7tubes are optional upgrade choice for driver tubes.
Standard 91-03 model: USD $5000
1. Super quiet version: $1000
2. 91-05 output transformers + further parts and wires upgrade: $1000
Sophia Electric 91-03/05 300B Stereo Tube Amplifier Specification |
| Design: | 8 watts output single ended 300b amplifier per channel with no negative feedback. |
| OPT Transformers: | Sophia Electric designed and in house made 91-03 output transformers featuring mixed vintage (WE) core and modern high tech core for sound and ultra specifications. Pure OFC copper wires are being used. Potted. |
| Power transformers: | Using the same high end core materials and winding method, one 220W power transformer per channel for AC consumption of 75w per channel x 2. |
| Frequency Range: | 12 Hz – 35 KHz +/- 3 dB |
| Residual Noise/Hum: | Super Quiet version: 0.9 mv Standard version: 2.0 mv |
| Distortion: | -0.18% at 1 watts at 1KHz |
| Weight | 60 pounds |
| AC Power: | 120V60Hz (USA) European/Asia voltage. And Japanese voltage models upon request |
| Required break in time: | 50-100 hours |
| Warranty: | One year parts and labor, Sophia electric brand tubes one year, Non-Sophia Electric tubes 6 month. |
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