New 300B Stereo Block Single End Power Amp - diyAudio
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Old 14th October 2010, 04:53 PM   #1
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Default New 300B Stereo Block Single End Power Amp

We are glad to introduce our new 300B stereo block class A single end power amp. The power amplifier sports a 12AX7/ECC83 input triode and a pair 6SN7drivers in SRPP mode that push the 300B in cathode bias mode and the rectifier of choice here is the 5U4G or 5AR4/GZ34. The output power is 8W. This 300B amp is the one from our reference series. The parts and components were seriously selected and must meet our request. Our goal is to reproduce pure music through the amplifers we made.

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Old 15th October 2010, 06:17 AM   #2
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All the transformers (power transformer, output transformers and choke) were hand-made by Mr. Zhu.
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Old 15th October 2010, 05:00 PM   #3
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The frame was made with rare and expensive palisander wood with very fine craftmanship.
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Old 18th October 2010, 02:02 PM   #4
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There are one signal input (direct signal path) and 4 & 8 ohms speaker outputs.
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Old 29th October 2010, 02:39 PM   #5
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Power supply is very important for tube amp. I selected audiophile graded Furutech FI-03 IEC socket for this 300B amp.
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Old 15th February 2011, 06:54 PM   #6
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Very nice! How much are these?
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Old 16th February 2011, 01:51 PM   #7
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This 300B stereo block class A single end power amp can make use Kenneth's hand-made power transformer, output transformers and choke, Jensen copper foil caps, Mcap Supreme caps, etc.
Price: US$2,980
Need to order, production time: 4-5 weeks.
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Old 16th February 2011, 02:03 PM   #8
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Its beautiful. I showed my wife last night and she was very impressed
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Old 16th February 2011, 04:05 PM   #9
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Thanks.

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Originally Posted by skeeter99 View Post
Its beautiful. I showed my wife last night and she was very impressed
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