Wall Audio M 33 SET Mono-blocks - Showroom demo pair

Wall Audio

$4,990.00 USD $11,340.00 USD

This showroom demo pair in black is in very good condition. Shipping costs to be determined after the sale. Email us for a quote.

Wall Audio M 33 SET Mono-block Amplifiers

Introducing Wall Audio's monoblock amplifiers M 33 SET, unconventionally with a gratitude to the brilliant Lee De Forest. His invention in 1906 – the high-vacuum triode – allows audiophiles all over the world up to this day a unique sound experience.

The M 33 SET monoblock power amplifiers are built on the base of this wonderful invention and include this high-vacuum triode as an essential feature. Therefore these amplifiers will convince connoisseurs in a playful way.

One of the advantages of the monoblock power amplifier M 33 SET is the automatic bias, so no maintenance is required – even at a necessary change of tubes no corrections whatsoever are necessary.

Special features:

  • No negative feedback!
  • "Super-Shunt"-Power Supply
  • Hand-made in Germany
Tubes 1 x 6C33 / 2 x ECC82 NOS (each mono-block)
Frequency Response 10Hz-20Khz@0.5dB
Output 18W / 4-8 Ohm rated power per channel
Input 0.770 mV
Dimension (WxDxH) 250 x 340 x 220 mm (each mono-block)
Weight 13 kg (each mono-block)
Power Consumption: 135 VA per Channel
Safety Automatic stabilized bias current of power tube | High voltage LC Choke (Pi) Filter | Tube overload protection

Anti-magnetic chassis | Pure A Class | “Super-Shunt”- Power Supply | Internal silver ribbon insulated wiring | Speaker transformer | First class material with a ferrous core (NiFe and CoFe)


Symmetrical input with 600 Ohm Transformer | Monitoring over Opus preamplifiers

David Elrod, customer: 
"...they are truly wondrous amplifiers! I have yet to hear a solid state amp with anywhere near this kind of magic...tons of power! Never would have believed this was 18 watts..."

Kenneth Jensen of Mono & Stereo concluded about the M33 monos (Oct. 2014):
 "...let me start off with saying that I've tried a tons of single ended amplifiers throughout the years and always gone bored with the SET sound very fast. Consequently I’ve gone back to push pull amplifiers. Its always been the same problems with lacking body and missing the warmth. And I’ve tried some of the best SET amps out there. With the Wall Audio M33 I didn't got bored or missed anything. And over time I found them to be just as good if not better than my push-pull amps. In many aspect better if not all of them. The M33 have it all despite the 18 watts. I truly never felt the need for more. And I do like to play loud! They’ve got so much going for them that they wont be leaving my estate. Even my wife was on board with letting them stay here. Cause they outperformed every single amplifier I had. Both in the detailing and in dynamics. They are the most involving amplifiers I've played with for several years and had me enjoying albums I forgot about. They will play every kind of music equally good and they don’t prefer any genre over another. What you put in to them they will play with the same amount of involving character..."

"...the build quality is superb. They seem like they could last a life time and look pretty darn good too...to sum it up. Its the first time in 20 years I've been found of SET amplifiers. And in such a degree that I’ve kept them and they are now my new reference at home leaving some much more expensive amplifier in the dust! (or should I say on the sales list on the internet) Cause I won’t be going back to using what I’ve had. They are that good!"

 "...I can full heartedly recommend these amplifiers with confidence to everybody who wants to try out SET amps. They are to say at least quit cheap compared to what you get. And must be looked at as a bargain in the triode world! Highly recommended. And put up for the component of the year award in my eyes!" 

Check out the entire review.

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