"When this amplifier hits the market (shortly) at Grant Fidelity, it’ll be a giant-killer, as a majority of its MSRP would be the cost of its excellent tubes alone. I have been extremely happy with the Shuguang Audio S300MK Integrated Amplifier with Shuguang Treasure tubes, and I have yet to find a better match to my horns. Bravo, Shuguang Audio & Grant Fidelity!"
Jake Montzingo, Publisher, Affordable $$ Audio. Full review here.
Shuguang Treasure Classic series of tube amplifiers are designed and manufactured by the well-known Chinese tube manufacturer - Shuguang Audio and it is the 4th generation from their very first design of tube amps around the Shuguang tubes in 1990s. This time the high end Treasure tubes are used throughout the line to achieve the best sound.
The complete design was to achieve the maximum synergy between the circuit and the highly sought-after Shuguang Treasure tubes. To keep the complete amp affordable to all consumers, no fancy casing, no extravagant capacitors and no shiny lights but under the cover, you will see an extremely well designed and well implemented classic 300B single ended triode tube amp.
It's a classic look with one of the best current production tubes installed to give you the absolute high fidelity sound.
For DIY-ers, this amp also offers you plenty of room to hot rod and experiment what you can ultimately get out of these Treasure tubes by using different capacitors. For music-loving consumers, you can simply sit back and enjoy the glow of Treasure tubes and the beautiful 300B sound.
Recommended to match to speakers with efficiency at least 87 dB and best matched to horn loaded speakers or coaxial speakers to produce sonic magic. Of course it will still sound great with any high-quality speaker design. Many at shows have heard this 300B SET amp drive our 84dB Reality LS3/5A speakers with ease to enough volume for most. The combination is amazing. The EL34 driver tube is what provides this amp with what we like to refer to as torque, enough to drive stubborn low efficiency panel speakers as well !
Features:
- Single ended triode Class A design with tube rectification
- Point-to-Point copper/silver hand wired throughout, point to point
- Oversized hand wound 115V transformers with OFC copper wire from Taiwan
- 6CA7(EL34) used as driver tubes instead of 6SN7 - drastically improve the bottom end of 300B performance and the depth of soundstage
- At key points, Rubycon and MKP capacitors are used
- ALPS volume control and WBT connectors
- Tube protection cage included for your convenience
- Aluminum remote control included
Tubes included:
- (1) pair of Shuguang Treasure Premium Grade factory matched 300B-Z tubes
- (1) pair of Shuguang Treasure Premium Grade factory matched 6CA7-Z tubes
- (1) pair of Shuguang export grade gold label 12AX7
- (2) Shuguang export grade 5AR4
Specifications:
- Input impedance: 100 kohm
- Input voltage: <=350mV
- Output power: 2 x 8 W
- Output impedance: 4 ohm and 8 ohm
- Frequency Response Range: 12 Hz to 25kHz
- THD: <=1%
- S/N Ratio: 80 dB
- Power supply: AC117V 50/60Hz +/-10%
- Fuse: 250V 8A Fastblown
- Net size: 16 1/8" W x 13 1/8" D x 8 1/4"H
- Net weight: 23kg / 51 lbs
