Review of Dartzeel NHB-108 Amplifier


Dartzeel is a relatively new entry to the high-end game. Despite being reviewed by John Marks in a recent issue of Stereophile, the company's only current product offering, the NHB-108 stereo amplifier, hasn't gotten a lot of press on these shores. Hopefully this "review" will do its part in rectifying that.
As many of you probably already know, Switzerland-based Dartzeel is the brainchild of one Herve Deletraz. Herve is a wonderful guy who's dedicated to the very best customer service. As essentially a one-man operation, I'm sure his time is limited, but he's always responded to my e-mails in an extremely courteous, timely manner.

On to the amp. I'm not one for technical details, so I'll leave them to those of you who want to visit Dartzeel's website. Basically, the 108 is a "purist" stereo amp rated at a relatively modest 100 wpc. Its smallish dimensions belie its weight, which measures around 65-70 pounds.

Internally, the amp is incredibly well laid out (if tightly packed), with an attention to detail that one should expect--but doesn't always receive--from components in this price range.

Outside, it's purely love-hate. (Refer to the website for pictures). Either you get it or you don't. Personally, I've grown used to its appearance over time, but it's taken a while to become acclimated. If WAF factor is any sort of issue, practice up on your compliments. Then again, I may be overstating the case. While it's not Liv Tyler, it's not Janet Reno, either. Time reveals its inner beauty.

Performance-wise it's a much more straightforward issue. In my experience the 108 is the most balanced, natural-sounding amp I've ever heard. It has a way with timbre that's downright spooky--up there with the very best tube units one cares to mention. The sound is just "right"--every note is reproduced with a tonal correctness and warmth that is as close to the real thing as I've heard in an amp. Because of it's sheer naturalness, it can take a while to overcome the initial impression that it is somehow soft or rolled off. That is most emphatically not the case! Dynamics are crisp and fast, and the frequency extremes are right where they need to be--not overstated or highlighted at all, just perfectly natural and realistic.

The only potential weakness of the 108 is its power rating. It flows a nice amount of juice for 100 watts, but one could theoretically run into problems with particuarly current-hungry or inefficient speakers. Part of the amp's midrange purity, I believe, is attributable to the use of the bare minimum of bipolars in the output stage. That, of course, comes at the price of power, but in this case the tradeoff is more than worth it. Just take some care in speaker matching--as you should, anyway--and you'll be rewarded with a sound that balances the very best of solid state with a midrange that will make some question whether they even need to fuss with tubes.

Despite its novel physical appearance, the need for careful speaker matching, and the fact that the US dollar has been taking a Tyson-like beating lately, the Dartzeel is a serious contender in the super-amp category. Yes, there are amps out there that do this or that "better" than the 108, but I've yet to hear one that strikes a better balance between the various areas of performance. It's a stunning piece of engineering and a landmark amplifier.

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Product Weakness: Appearance is strictly take-it-or-leave-it. Power rating requires some attention to speaker load. Cost.
Product Strengths: Naturalness, midrange magic of the highest order, speed, dynamics

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Associated Equipment for this Review:
Amplifier: Dartzeel NHB-108
Preamplifier (or None if Integrated): EMM Labs DCC2
Sources (CDP/Turntable): EMM Labs CDSD
Speakers: Von Schweikert VR-4 Jr.
Cables/Interconnects: Jena Labs Pathfinder
Music Used (Genre/Selections): Rock, blues, country, some classical
Room Size (LxWxH): 24 x 20 x 7
Room Comments/Treatments: Echo Buster, ASC
Time Period/Length of Audition: 3 months
Other (Power Conditioner etc.): Shunyata Hydra-8
Type of Audition/Review: Product Owner
hooper
probably should add I prefer SS to tubes: not necessarily in sound (there are great examples of both, and the opposite true) but really do not want to go down the tube rolling path: call is self discipline: otherwise knowing myself would endlessly experiement and I simply do not have enough time and prefer getting things set and just emjoying the music, you know?
One last thing: I use the DCC2' as a pre-amp as well. I had thought of leaving the Linns and introducing a sep pre but upon further reflection this seems the wrong path: instead get the amps right then audition pre-amps to compare with the DCC2 and new amp in suit to see I really need to etc. Do you guys/gals agree?
Henryk: You have a lot going on. The Kharma speakers are wonderful. Adding the diamond tweeters, at least here in the US, costs about $20k US. I really think if you are going to spend that kind of money and stay with Kharma, you should look at the Midi Exquisite. The Midi is designed for a small to medium sized room. If you want delve into other speakers, I am very biased toward the Von Schweikert's. That is why I sell them. That being said, the VR7's also are a big speaker. And if your room is very small, it may be a bit much. You might consider the Von Schweikert DB99 MK2.
Thanks Jtinn. So you are saying might as well upgrade the speaker itself if I indeed spend that kind of the money on a tweeter upgrade. V good pt. Not familiar with the DB99MK2 and will check out. And I think the VR4Jrs will not exceed my speakers anyway. Increasingly it seems I need to first experiement with the power amps then go for them there. Who knows upgrading the power amps to say your beloved DarZeeTel NH108s may just do the trick after all.
Do you guys realize that most of the given & take so to speak has btwn dealer/importers and reviewers...and about each other...and about this thread...so that you have driven the curious "simple" audiophile out?: Perosnally I have no issues with dealers or reviewers posting here and actually welcome it...as long as we all stay on the subject at hand. I sort of understand what you guys all saying but you can take your disgreements off line please in the interest of others who simply wanted to see if what initial feedback was on the new preamp. Thanks in advance.