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Review: Pass Labs Aleph 3 Amplifier

Category: Amplifiers

Old design, apparently still sends tremors in the shape of dissmisal or wholhearted approval, througout the audio community. Regardless of all the fuss, the Aleph is thing of the past, along with Aleph 30. Scratched of the board. Finished. Done! Even Nelson has distanced himself from this design, by going probably more modern path?!
So why all of the fuss? Is this "box" soo good to become a classic, or it is "lifeless", "collored" etc... that some had named this amp?
Just replaced my old SFC-1 (also reviewed) with Pass Aleph 3. And now, when all the excitment is over with, i feel i can draw some conclusions about this amp.
I have several CD's that have been my favorites for last couple of years that i am familiar with. And would for sure know if something is missing, or if i would to hear MORE? In fact that's the same reason we usualy upgrade.
I chose 'bare bones' Cary Slp-50 tube amp, with two 12au7's running in pure class a operation (that's what technical data said). Old (1994) defunct DPA three piece DAC/Dpa T1 transport totaling over $15K when new. I figure, if it was great then, it must be good now?
Speakers are DIY watt/puppy clones (Focal/Seas/Peerless and all the good x-over parts)
Wire Discovery 123 speaker cable, Pbj for Dac/pre and unknown Monster pre/amp (i am not big into wires)

Sound? My tube amp had deeper soundstage, and solid imaging. Softer treble, and looser bass. What gave overall darker presentation. Even 'emotional' sound that was definitely sign of higher colloration than the Pass. Much higher! I just had to play piano (Satie Piano Works vol.1 Naxos) to hear those high notes, where sound is like striking chips of ice againsteach other. Alwas have complained about Sony's John Williams The Guitarst, and the sound quality. Aleph brought these performance much closer to me, even at the low volume levels. Bossa Nova brasil on Verve in past, alwas brought bass troubles int my system. Even though that Alep 3 is not supposed to DO bass, still brought some improvement. Especialy, with electric bass! Robert Lucas Luke and Locmotives(Audioquest), was feast and the beast! On this one i had to turn-up the volume somewhat. Not because of lack of dynamics,but for pure joy!
Large orchestra and Pass did wonderful job together! Berloz Symphony Fantastique, with all the bells and whistles was outstanding wit its panoramic soundstage!Bruckner symp. No 4 (Naxos), and quite slow beginning wasn't just empty space. I could "peek" into the concert hall and hear many things they were just void, in the past. When all the action started in Rossini's Barbiere di Sivilia (ACUM), all came together but still preserved steady placement of the individual instruments. Meaning, that there was a lot of going on i wasn't aware of!
YoYo Ma's Bach's suites, Cello did sounded "woody" with tho dose of high energy, that sounded like flatulance on my tube amp. Very impressive with the Quarteto Italiano's Beethoven Late Quartets vol.2. This analog recording outclasses all the modern recorded attempts.
The amp delivers detail, detail lots of it! But it doesn't do just that. It comunicates the artist intentions. It isn't "cold", nor "warm". It is just. Music. With purity that Aleph delivers, i do not believe i'll be looking for more! It runs hot, but not as hot as my old tube amp with four Kt90's.

Other recordings: Calamus Splendor of Andalus Ma rec
Arvo Part Tabula Rasa naxos
Wagner Taunhauser opera
Mozart collection 10 cd's

Associated gear
Cary slp-50, Dpa Dac/T1 transport

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Showing 3 responses by ferrari

ferrari
617 posts
 
Well apparently Nelson is not just ready yet to put the Aleph technology out to pasture. On his www.firstwatt.com web site a newer version labled the Aleph J is ready for delivery and is limited to 100 copies personally built by him.

Would love to hear any reviews or thoughts on this newest version Aleph. Just don't know if it has enough muscle for my Alon Model 1 speakers. Any thoughts there? 87dB speakers.

For the price rather hard to ignore and from the mind of Nelson Pass should speak volumes about the newest Aleph.
ferrari
617 posts
 
Not to disparage Onkyo, however ,as for me I will take anything from Nelson Pass and not look back, as opposed to products from the asian basin. Only God and Nelson knows how many times his designs have been ripped off over the past 35 years. While the Onkyo is Class D amplification as opposed to the Aleph, which is Pure Class A. Most all of Nelson Pass products have earned legendary status. Whats the Onkyo legendary component? I can't remember one that could be even remotely compared to Nelson Pass, in any given year.
ferrari
617 posts
 
I have used an Aleph 30 which is very similar to the Aleph 3 and have driven 87dB speakers with it with zero problems. Also I have found out it is best to leave Class A output amps on 24/7 for best results and long term reliability. Switching Class A amps on/off tends to shorten their life due to the cycling process of heat to cold and vice versa. I leave Class A amps on 24/7 and have never had a problem. Less convection for the amp to deal with. Of course if I am gone for a vacation or long week end I will power down the amp.
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