For sale are for my treasured pair of 6C33C SET monoblocks. They are professionally made in Japan with all the rare and exotic parts such as Tango Transformers and all Elna Cerafine Power Filter Caps (as good as the fame BlackGate WKZ series) and with all the other premium parts. After I bought them, I have extensively modified and improved upon them over a number of years while preserving the original tube circuit. They could be arguably one of the best sounding 6C33C SET amps at this price point using some of the best parts available and I believe they could rival the big brand like LAMM and BAT.

Maximum Peak-Peak Output power is about 45Watts with an 8ohms load connected to the 8ohms speaker impedance tap with 2Vp-p input signal. The RMS power at 8 ohms is around 12Watts at 2V input signal. Frequency Response is 15Hz to 60KHz with Power Bandwidth of only -1dB from 20Hz-20KHz at full power.


The special made Tango transformer for 6C33C tube has multiple output taps for 4 ohms, 6 ohms, 8 ohms and 16 ohms and I have installed a very nice impedance selector (U.S.A made sealed switch) so you can try out and better matched the impedance of the amps with your speakers at the convenience of your finger tip and a twist of a switch during playback. Also installed in each amp is tightly matched and hand selected New Old Stock Real Nobel Volume Pot so you can use as a volume control for the amps with the direct connection to your favourite CD Player or Cassette Deck / Tape Player. Or you can adjust the volume trim to fine tune the dynamics between your preamp and the speakers. You can use the amps with the CD/SACD Player or Tape Player directly that have line output of 1V or more (2V standard Line output is preferable for direct connection to reach the full output of these amps).

Also replaced are all the signal coupling caps with the best caps from Mundorf. I have replaced all the signal coupling caps to the Mundorf Silver Gold Oil Caps (best of Mundorf) for the ultimate transparency and neutral sound. All the cathode bypass caps are also replaced with the Best Nichicon Caps and bypassed with the Mundorf Silver Gold Oil Caps.

Since the Japanese Tango Power Transformers are originally designed for use with 100V Japan Line Voltage, I decided to convert them to use with 120V U.S Voltage and new IEC power connectors are installed.

All other eletrolytic capacitors are Brand New from Nichicon to ensure the longevity of the amps. There are many other improvements (new pair of high quality Silver Plated Copper Speaker binding posts, new Aluminum isolation feet; etc.).

Although all the caps and many parts are new, the chasis has some minor blemishes. But both monoblocks are still highly presentable and visually striking (as 6C33C SET amp should be).


The tube complements are One 6C33C, One 5AR4, One 12AU7, and One 6CG7/6FQ7 type. All the tube sockets are labeled for proper tube replacement when the time comes to retube.

Each amp comes with very strong 5AR4 Mullard / Hammond (labels are nearly wiped off), NOS clear top 12AU7, Japanese 6FQ7, good working used 6C33C tube with unknown usage. In addition, I will throw in a Brand New Pair of 6C33c to ensure you'll be getting the best out of these amps.

They sound very clean with very holographic imaging as one should hope they are. They are absolutely noise and hum free with a very quiet background on my 100dB+ sensitivity speakers so you don't need to worry about hum and noise with many other SETs.

Furthermore, I have so much confidence in them that I will guarantee them for 3 months for parts and labor in case anything happens. In case of any mishaps, just email me and return them to me for service. You'll be liable for shipping fees but I'll cover parts and labor.

But they should really be working trouble free for many more years to come as almost everything is NEW.

All in all, the parts and labor of these amps far exceed the value I am asking for. So, please no low ball offer!

Will be packed and shipped individually with FedEx Ground Insured for safe shipping. Tubes will be packed carefully and shipped inside the same box with the amps.

Buyer will pay shipping fees and paypal fees if paypal is used. I will gladly allow local pickup from interested SoCAL residents. Demo may be possible if you are a local.

Please ask any questions you have before purchasing them.