睿志音响

	Wisdom in mind, enthusiasm at heart.

SA-300 MK3
Diamond Difference Design
balanced bridging Power amplifier
Supports XLR and RCA input

price: USD1330 (Excluding shipping cost)

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Specs

Technology Detail

Shipping Cost

Fully balanced design, the gain stages and pre-driver stages working on full class A , built by discrete analog stages without any OPA and couple caps in the signal channels.
The output transistors stages working on high idle current state . The Diamond Cross output stage design can avoid "switch distortion" as good as the class A amp .
Diamond Difference design , detail but a bit smooth
Analog inputs: XLR /RCA
Real balanced design, even with RCA input but can output real balance signal without extra RCA to XLR conversion circuits
Applies 24 pieces of Toshiba 15A transistors for the output stages. Supports 250W X2 (8 Ohms) output.
The capacitance of the whole machine reaches as high as 130,000 uF, Two 750W (Total 1500W) core transformers , Separate power supplys for the right channel and left channel.
Each channels applied a total of 6 groups PSUs power supply for the gain stages .
Applies all audiophile grade components, including DALE resistors, EVOX caps, custom order NOVER (UK brand) caps, Neutrik XLR input , CMC output sockets and gold IEC socket.
　

History of the Diamond Difference design :

At July 2004, I registered the brand audio-gd , at September 2004, I published the first generation diamond difference design at the < Radio & TV> , the best popular audio technology magazine in China . There were a lot DIYer call me even writed letters to me discuss the circuit.	At November 2004 , the fist regular product of audio-gd , XA-100 power amp released. It had the good honor from customers , let audio-gd can stand and grow up. Before this amp, I already have 6 years experiences of built the Diamond Difference circuit .	At 2005, the first regular DAC product DAC-1 released, a TDA1541A with diamond difference output stages.

At 2006 ,the RT-1 released , its sound adjusted based on a 300B tube amp.	At 2007 , the RT3 kit released for DIYers .	At 2008 , the DAC-3 released, built in 4 pcs PCM1704 with diamond difference design .

At 2009 ,the SA-300 balanced amp released .	At 2010, I design the dual TDA1541AS2 DAC for fun, we only sale 5 units to the return customers . A pair TDA1541AS2 now value USD800 in market .	At 2011 is the Reference 8 and 9 released .

Some other products applied Diamond Difference design maybe can't list , like the C-2 SA, ROC-SA, SA-100.
　