I am chuckling reading the reviews from recent times and 10+ years ago. What I have to say is in line what others have already expressed and there will be nothing new. I have been a fan of McCormack gear for about 20 years, was using the MLD/MPD compact designs for many years. I finally replaced the Micro Power Drive with a 0.5 Dlx model to match the ALD-1 Dlx as the back-end. The detailed McCormack sweetness is now matched with a solid, punchy and well defined tight bass. Everything sounded just right suddenly, the way it should be. I had NAD, Adcom, Carver and other mid-priced gear before and was always hesitant to upgrade, being a budget minded audiophile. I can say the DNA 0.5 will not be replaced, ever. Purchased for a bargain price of $650. Granted, I had to replace a worn e-cap pair in the power supply stage to get rid of a nasty distorted sound upon power-up, so if you are thinking to buy an older unit, be prepared for some potential repair work. I upgraded with high-end low ESR e-caps and now all is fine.

I got this amp today and put it in my system and am astonished by how fine it sounds. I have an upgraded CJ solid-state amp and it is a vast improvement in all respects to the CJ amp. It is very dynamic and has excellent LF response -- major slam with the bass, no question. The CJ amp has a bit of sibilance at higher volumes, but there is nary of hint of it with the .05 amp. The incredible articulation of the individual musical notes reveal nuances with music I have had for 20 years that I have never heard before.

Bottom line is that in stock form, this is a fabulous amp, much better than any amp I have had in 40 years (Modwright, Berning, several CJ, Moscode, HK CII & CV, Emotiva, Bryston). SMc has some mods that evidently take the amp to a higher level, but it is really hard to imagine how the amp could be improved upon. I am running the amp into Spatial Audio Hologram M4 Turbo S open-baffle speakers (~94 db efficient) and honestly am hearing my music in a way I have never heard before.
Cheers, Mark

The search stops here! I have been an Audiophile for 20+ years, now. I have had anything from Adcom up to Audio Research amps and this is in my opinion the perfect power amplifier. It's powerful, lush, detailed, not hard or harsh, extended and talk about goose bumps! Just about every amp I have had had one or more major flaw. I am the kind of guy that rotates my equipment every 3 to 6 months to get a "different" sound. This amp is staying. I'm running it with an Audio Research LS7 tube pre with CD and Records as sources. I'm totally immersed in the music, now. The music use to come from my speakers. Not anymore. It effortlessly floats into my listening room. The best part is it only cost me $600 used on Audiogon in mint condition. Crazy. You can spend a ton more but, why? Spend the cash you save on your speakers. BUY ONE NOW!

Beautiful sound quality at peanuts price. Powerful. Reliable. Customer service for an amp that was made in the early 90's. Upgrades possible.

Zilch. Makes me want to skip work and listen all day.

Having read lots of great things about the dna .5 I decided to try one. I now own a basic DNA 0.5. I am using the Marantz SACD player and McCormack TLC1 to drive the amp, and it drives a pair of Thiel CS1.2s. I use a paradigm active sub to help in the lower octaves. Nice mating to the speakers which I think is due to the room size and shape (usually add on subs create an annoyance to the sound, not a positive addition) The amp the DNA 0.5 replaced was a NAD C272. Initial impression: from all the reviews and amplifier manual, I was suppossed to wait several hours for the amp to sound its best, but, being a tad impatient, I fired it up right away. Sounded OK from a dead-cold state, but after about 1 hour things grew more refined. After a few days the improvements leveled out, but really, this amp needs to be turned on for a few days to sound its best. On to the show... So the first thing that struck my friend and me was the purity and weight of the midrange. The NAD sounded like it was playing a clean musical signal, but the DNA 0.5 imparts emotion to the mids that I (to this day )can't believe is possible from a moderatly (to low) priced solid-state amp. More on my setup: I have the Thiels about 7 feet center to center, 4 feet from the back wall and 3+ feet from the side walls. My listening spot is 9-10 feet from the front face of the Thiels. Room = 20x25x9. Soundstage: the thiels completely disapper. On some tracks they look like they have nothing to do with the sound in the room. Completey de-coupled from the reproduction. Funny. The stage is a tad wider than the spacing of the speakers, and the front to back (and height) is more than adequate. On some recordings you think there are rear surround speakers. Also funny. Did not hear that with the NAD. Sound Quality: 1)Bass- Despite the limitations of the little thiels, the bass clarity is great. That is, bass instruments are reproduced with clarity of pitch and weight. The sense of impact is quite good for this small setup. The overall fullness and warmth also notable. Midrange: I am not going to compare it to tubes. Not necessary. The midrange is pure, clean, and extended. I am swept away on Diana Krall's warmth and weight. Natalie Merchant soothes me after a long day. Her voice wants me to say liquid, but i'm sick of that cliche...It sounds great...I throw in some smashing pumpkins and corgan's voice irradiates the room in an erie fashion, these qualities of sound are diminished with the NAD C272 I think..., I put in the SACD of BB King (reflections), crank it and I am amazed at the ease and BIG sound issued from the Thiels...BB's, ah, mature vibrato sounds spookily present in front of me. The band plays in the back like its part of the wall/yard...weird I tell myself..and this is with the STOCK DNA. The obsessed audio junkie in me screams wait till the Rev B or better upgrade...it gets better... but I soon return to earth an enjoy the pure music. Highs: Thiels have the reputation for sounding bright in some systems. Not so here. The NAD had good extension and detail, but the DNA 0.5 is a tad softer, perhaps a tiny bit sweeter, dare say I? Wonder what that RevA does...? The cymbals from a pure DSD SACD recording have that natural sheen you hear when in the presence of the real thing. Amazing. What will that plitron/diode combo possibly improve here? The amp is an emotion engine... I will never part with it..You can have it from me when you pry it from my cold dead hands type of connection...speaking of connections I really wonder about those sweet looking WBT next gens...:) ...after the upgrade I will be replacing the beautiful Thiel CS1.2s with next generation and bigger brother Cs2.3s. Stay tuned to that plus upgraded DNA report on the 1.2s. Love the amp. Highly recommended. None better at this price point. Steve and Kris at SmC Audio are true gentlemen too.

Similar Products Used:

NAD C272 Dynaco Stereo 70 Adcom GFA 555II, 585, 565. Muse Model 100. Theta Pro-Prime II EAD T1000 Transport Marantz SA8260 Aragon 24K McCormack TLC-1 NAD 541i Wire World Equinox Kimber 8TC/TC NHT Super Zeros

Warm, fluid, tube-like delivery. The rating of 100 wpc @ 8 ohms is conservative - it will play very loud without audible distortion.

None significant, although I wish it had balanced input jacks. I have noticed from reading various "for sale" posts over the years that there seems to be a tendency for the faceplate and heatsink fins to get dinged up.

This is the Deluxe version, without any of the post-production modifications. It has been the cornerstone of my system for years. Every time I get upgrade fever and try to get rid of it, I find myself auditioning amps in the $2,000+ range to find significant improvement in the sound quality. They were a great value at full retail back in the day and are a tremendous bargain on the used market right now. I predict that in 10 years people are going to be talking wistfully about the DNA-0.5 in the way you hear old timers reminiscing about their classic McIntosh gear.

Similar Products Used:

Bryston, Parasound, NAD, Adcom, Acurus, Linn, Classe

Huge soundstaging, musically involving. Quality engineering. A great bargain at its price point.

You must be joking.

Regretably I sold my McCormacks and went on a search for the perfect amplifier. I have come full circle. That is precisely what I did, I went in circles and wound up right back where I started, the McCormack amp. Nothing beats the McCormack DNA .5 Deluxe for pace, rythym, and drive, period. I am back to listening all my music and enjoying it even more! You will have to dig pretty deep in your pockets to beat this amp and then it may still not beat it for musical enjoyment and soundstaging. God bless Steve McCormacks's genius for these wonderful amplifiers. I have had McCormacks with the revision B and it will take what is already a superb amp to higher levels. Strongly recommend!

Similar Products Used:

Conrad Johnson, Bryston, Aragon, Music Fidelity, B&K, McCormack DNA-1 Deluxe, and etc.

Everything about it.

If you have inferior musical source material, you'll hear it because this amp is accurate.

Believe all the hype. This is the real deal. Almost 10 years old and still better sounding than anything new at or near it's original price, let alone what you can pick one up for in the used market. I'll keep this forever. Crisp, clean, neutral, full, open soundstage and full spaciality, great separation, warm like tubes but nothing is overdone, never tiring, I can listen to this all day.

Similar Products Used:

Denon, Luxman, Arcam, and Dynaco amps--and this blew them all away.

Bargain price Built like a tank Superb after-sale service, with the cache of the designer tweaking your amp to your spec Fresh circuit topology that's stood the test of time - and gets improved upon significantly for a moderate price Excellent components esp for price point Wonderful balance of smoothness, detail, presence, dynamics and power for a moderately priced ss amp

Bass impact is not Krell-like Industrial-looking design appearance may not please the Stereophile poser set (I like its lack of high-end 'styling' pretentions)

Picked up one of the last runs of the DNA 0.5 Deluxe for a steal, and after a couple months sent it off to SMC audio for their Rev 'C' upgrade ($400). The sound was smooth and neutral to begin with, drew no attention to itself. In Rev C guise the vocals are smoother and 'rounder', and the midrange overall seems faster and 'bloomier'. There is a greater sense of air and openness with better image localization. I had borrowed a VTL tube amp during the upgrade and the McCormack does everything the VTL did but better and faster. SMC is top-notch for customer service, doing some custom work at my request for a very fair fee, keeping me informed of progress, and being responsive to Q&A boith before and after the mods. Steve suggests a rev C 0.5 deluxe is a smidge more transparent than a DNA-125. Rest of system: Preamps: Sonic Frontiers Line 1, Adcom GFP-710, Headroom Max Reference, Creek OBH-12 passive Sources: BelCanto DAC2 and Phono1, Magnum Dynalab FT101a, Nak DR-1, DR-10 Interconnect: Audioquest Viper, Coral, Emerald, others Spkr Cable: Audioquest Bedrock Spkrs: Modded Boston Acoustics A200 (!); other spkrs have been demoed with the DNA

detailed, musical, non fatiguing, powerful sound. I have by the way the DNA0.5 with Rev B revision. The stock DNA 0.5 sounds very good but the Rev B takes it a notch higher!

In the past I had used Krells, Classe, Levinson, Nad, Rotel, etc. etc. So far this is the most balanced, musical, detailed and powerful amp that i have used. It is never harsh, never calls attention to itself unless the power is needed and above all I can listen to it for hours and no fatigue! Best part, its so easy to match with different pre-amps. Had a 10 year old amp by First Sound and now have a BC3 Galatea, no problem with either one. A friend uses a CJ PV10 and Anthem Pre, no problem, works like a charm!

Not bad, but a little soft ( or too soft ) at the top and the bass could be a little tighter.
Otherwise very fast clean and lots of detail
MUCH,MUCH BETTER then some S.E. amp in this price range