XiangSheng 728A is based on famous Wada Shigeho`s Style Electric circuit,which was Introduced by Wada Shigeho in the early 1960s,It is superior tube preamp which better than Marantz 7 preamp in some ways.
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Xiangsheng 728A High Performance 12AU7 12AX7 Vacuum Tube Preamplifier
Treble/Bass/Blance adjustable,With bypass mode
The pre-amplifier improved based on famous Wada Shigeho`s circuit,which was Introduced by Wada Shigeho in the early 1960s and gave an excellent performance. About the Wada Shigeho`s circuit, It keep the good features from Marantz7, meanwhile it have superrior features in Dynamic, Great bass/treble response, Better detailed and SNR as compared to Marantz7. It uses 4pcs NOS oil capacitors and German WIMA capacitors for coupling,Produce great warm/ clarity sound.