Pulse Mono Amplifier

Meet the Paradox Pulse Mono Amplifier.
See review from Audiophilia by clicking on text below or pictures and going to the link.
Mono, solid state, A/B power operation, uniquely designed and hand assembled using the finest parts available.
Hard wired for sonic purity and reliability.
The Pulse mono's relevant specifications are;
Input impedance 100k ohm, overall gain 27dB
Power consumption 5 watts, they are meant to be left on always
Buffered output for subwoofer or daisy chaining 
17"L x 6"W x 4.5"H center section 4"x4", ~16 pounds each
Max power 100 watts

Specifications can easily be manipulated and do not indicate the sound quality or parts quality (these two items are one in the same) so as a rule are meaningless.
My saying is "specifications are not worth the paper they are written on" so these specifications are for others that request such things.

Meaningful information about the Pulse amplifier is as follows.

No switches or relays of any type as they all impede performance (this means any device with them WILL  NOT sound as good as it could have otherwise) and are only for convenience functions.
Chassis is used as the heat sink so overheating the amplifier is impossible under normal operating conditions if used indoors in a comfortable room.
We have never tried to put them in the sun outside (I live in the desert where temperatures in the 100+ degrees are common in summer) and blast music to their clipping point so I do not know what would happen under those conditions although I believe they would be just fine.
Parallel transformers to lower overall impedance. This lowering of impedance is very important to bass and the dynamics within the bass line.

Quad Schottky diode rectifiers per mono, which means there is a total of 16 diodes to make the bridge rectifier dropping the impedance significantly. Again dropping impedance to the A/C another reason why there no amplifiers better at bass, speed and detail than a Pulse.
Plug the Pulse mono straight into wall outlet as they have their own filtering and surge suppression. Using two gas discharge tubes for surge protection and 12 gauge copper foil inductors along with MKP capacitors to remove hash noise via the AC PI filtering.
Mundorf M-Lytic capacitors (4 total) and Mundorf 12 gauge copper foil inductors make up the DC PI filtering for removing further noise from the DC power supply along with very special bypass capacitors. When I say very special I mean secrets that no others have. I hate secrets but I do not want other companies to ever be able to catch up!
Output Devices 4281 and 4302. "O" wire 8 gauge copper.

More to come!

The Pulses have a robust, vivid sound matching some of the best solid state amplification. When the music calls for delicacy, the amps deliver the most beautiful, diaphanous sound. They were a little intimidated, cold and fresh out of the packaging (first rate shipping container, BTW), but break in and warmth showed their true colours. 

Ravel’s  Daphnis et Chloé was a perfect piece to show off the virtues of the monoblocks. Dynamics range from pppp to triple fortes and everything in between.
Only amplifiers with the best dispositions give the listener the cornucopia Ravel requires. Too many confuse p and f as mezzo forte — they lose the subtlety. Sure, you can get a serious wallop from most decent amps, but great speakers, speakers that can decipher every musical message, deserve the best in amplification.
The Pulses delivered everything this listener wanted, whether the craziness of the Danse Générale or the tender love scenes, featuring, of course, the flute in its most famous solo. 

Underneath the flute solo, the basses are vamping in a very quiet dynamic. I was hearing the bass clearly, low and with speedy transients, but bass with timbral accuracy — another benefit afforded the listener by Paradox. 

The Parodox’ conservative power rating remains a bit of a mystery, when there seemed to be gobs of effortless power available to my not particularly efficient Raidho X-T1 Loudspeakers. I traded my 110 watt Audio Research amp because I felt the speakers needed a little more legroom. The ARC could drive them, but on loud rock or heavy orchestral repertoire, they seemed a little inhibited. No such inhibition with the similar rated Pulses. Designer Robinson did suggest, in his anti-spec screed, that his amps will sound like they have much more power. Steely Dan’s live Bodhisattva tested that theory. It’s very demanding, if the electronics are to give the feeling of the live event and decipher all the musical goings on. The amplifiers were superb, here. Donald Fagen’s crazed voice never sounded so present to me. Unless you have terribly inefficient speakers, the Pulses’ power will do just fine. 


Stereophile and a few other print magazines won’t do a review unless the manufacturer in question has a dealer network. Five, at least, I think.
The advent of the web produced different types of entrepreneurs with many selling their wares direct from a web landing page. As with any internet purchase, caveat emptor. However, the testimonials on the Paradox Enterprise site, the different types of equipment they manufacture (including some fascinating analog kit), the 30 day money back guarantee, and the wonderful quality in both build and sound of these excellent monoblocks, I suggest you give them a look.

Paradox Pulse Monoblock Amplifiers
JULY 26, 2017 

Review copy and pasted for my site. 

Terence Robinson, owner and chief designer of Paradox Enterprise, has been making bespoke high end audio components and loudspeakers for over forty years.

Like many ‘old stagers’ in this business, with a history going back to the beginnings of our avocation, Robinson has quite defined opinions about all aspects of the ‘business’. Design, print, ‘audio personalities’, just ask him. 

He has maintained a going concern in the high desert of Southern California and has many loyal customers. 
I was contacted by Paradox and decided to give their Pulse monoblocks a run in my system. Even though a boutique company, they’ve been around long enough to recommend as a manufacturer to our readers, if the sound and value warrants.  
At USD$14,000/pair, these solid blocks are not cheap. Robinson extols (read below) the use of only the very best quality internals. Case machining is good – but you’ll get no Jeff Rowland or Boulder bling. Better than utilitarian, I thought they looked the part in my rack.

Quality parts include Mundorf MLytic power supply capacitors, 12 gauge copper foil chokes (DC PI filtering), paralleled transformers, quad stacked Schottky diode bridge, transistors 4302 and 4281, A/C PI filtering, buffered output to run sub woofer amps, Cardas binding posts, Vampire gold RCAs, and their own Paradox wire (Robinson sent along a phalanx of wires and power cords to try along with the amps, which I did for the full review period). The Pulses are hand built in Victorville, CA and come with a money back guarantee, less shipping.

Robinson eschews ‘Specifications’. I can assure him, many of our readers do not. That said, he does offer a few tidbits: 
Input impedance: 100k ohm
Max Power: 100 watts
Solid State A/B operation, idles at 5 watts
No on/off switch ‘as they sound best left on’ 
I asked Robinson, chief designer and owner of Paradox for a little background on his company and design philosophy: 
Paradox Speakers started nearly 40 years ago with a planar magnetic speaker, later exhibiting at a Chicago CES. Since then we have made several different types of speakers for discerning customers. Over time Paradox Speakers became Paradox Enterprise as we began to produce components in addition to our loudspeakers.
About five years ago Paradox Enterprise started a new chapter with the Pulse line of electronics and cables.
My engineer (my brother Ronald Robinson) and I have created some very unique products not built as "NORMAL" electronics are built, instead built as if we would be the end user.

First item to go is bling as it serves no sonic function and can (will) degrade the sound through its own distortion or noisy ground plane the same way fluorescent lights, dimmers and remote controls can.

Second, spare no expense. Sometimes this means omit items like a power switch, there are NO bean counters for the Pulse line, if it is inside,  it is the best we know of.

Third, use all 40 plus years of our knowledge bank.
Paradox Pulse has only one end goal and that is to build the absolute best sounding products available at any price period.
All Pulse products will continue to evolve as more advanced products like capacitors, devices, connectors, our circuit topology and cables become available. 

One of Paradox's longest and most coveted quests has been to find superior sounding wire. We think we have something special and it is not copper, silver, gold or platinum. I rarely hold secrets from others but this is one I will not divulge.
The Pulse amplifier is a very minimalist approach to amplifiers and thusly has limited power. We rate it at 100 watts but that is just a number where the VA of the transformers will start to reach their limit. The device itself is rated for 250 watts.
I think the amplifier to be the single most important component in a audio system followed by connections, source and speaker. I know most do not agree with that assessment.

Setup is fairly straightforward. As there is no on/off switch (which doesn’t bother me a bit), ensure all other components are turned off before hookup. They sit at idle at 5 watts, and don’t get too hot under the collar. I broke the amps in for 50 hours before I began serious listening. 

When attaching wires various, you’ll quickly recognize the quality parts Paradox uses on/in its kit.