May 22, 2018 dartzeel has launched their new flagship nhb 468 mono amplifier, which is a product of nine long years of work in research and development. That means the 108 employs openloop input and output stages with no global negative feedback. For sale a new old stock dartzeel nhb 108, custom ordered with black front, new in box, never openend with 2 years warranty. Each output device amplifies a slice of the music and the signal might not arrive at the exact same time from all of the transistors, even if they used matched transistors. Absolute sounds are proud to introduce the longawaited result, the dartzeel nhb 108 model one stereo amplifier. Feb 28, 2011 sometimes a product just demands a large gasp. Recently, a blue note record producer brought over some test pressings of norah joness catalog, now being reissued on vinyl by acoustic sounds. Review of dartzeel nhb 108 amplifier dartzeel is a relatively new entry to the highend game. It also allows the amp to warm up in just five minutes after defeating what is really standby.
Review of dartzeel nhb108 amplifier audiogon discussion forum. Evolution acoustics also premiered their new interconnects, a rather largish cable, to say the least. The dartzeel nhb18ns is the perfect partner of the nhb108 model one. Review of dartzeel nhb108 amplifier audiogon discussion. Dartzeel nhb18ns mkii preamp w mc phonostage audio.
Priced at the highend broker 800 usd or 12500 euro export price o. Very musical and analogue sounding power amp using top quality parts housed in a nice quality look alike dartzeel all aluminium casing. Dartzeel nhb468 465w stateofart monoblock power amps. The nhb458 is once such product, the weight, the physical size, the finish, the power on tap and the price tag are all gaspworthy. Like the dartzeels original nhb108 integrated amplifier, the nhb458 has a zerofeedback, true openloop output stage, so theres no outputimpedance compensation ie, zobel network. Or would the dartzeels be neatly threading the needle between the soulution. It was equally convincing driving a pair of ayre acoustics mxr monoblocksand, of course, dartzeel s own nhb 108, via the proprietary 50 ohm link.
The 108 is powered by two volts all of the time to extend the life of internal components, especially the capacitors. View online or download dartzeel nhb 108 one user manual, owners manual. Well, a short circuit at the speaker outputs, speaker impedances that are too. Dartzeel nhb108 model 1 manual stereo power amplifier. Nhb18 ns reference preamplifier phonostage blue light. The nhb108 has earned legendary status among critics and music lovers alike. I got several patents since the circuit i designed was never achieved before, and at the time it. Delivered by fedex in 8 days and parcel in perfect condition. It is the most powerful amplifier ever designed and built by dartzeel, and rank among the most powerful audio amplifiers ever offered, and it replaces the previous world famous nhb 458. The dartzeel nhb 18ns is the perfect partner of the nhb 108 model one. On the soulution side of fast, tight, and detailed. The audiophiles technical manual explains the designers goals and delves into. Audio products absolute sounds international distributors. Senior editors frank alles, mike girardi, key kim, russell.
Schematics unlimited free diagrams, schematics, service. Hiselling my dartzeel nhb 108 clone, or might be open to trades for a tube amp. Aug 03, 2012 like the dartzeels original nhb108 integrated amplifier, the nhb458 has a zerofeedback, true openloop output stage, so theres no outputimpedance compensation ie, zobel network. The current iteration of the nhb 108 model one has been available in production form since 2002. The new nhb boiler series is the next in line of innovations from navien. All nhb boilers have naviens advanced burner system, an industryleading afue of 95% and turn down ratios up to 15. Dartzeel nhb108 nhb108 clone for sale us audio mart. Recieved my dartzeel nhb108 copy from china page 7.
Its immediate success and multiple awards helped to quickly establish dartzeel in the premium market. Download free diagrams, schematics, service manuals, operating manuals and other useful information for a variety of products. The description of the circuit design is perfect, concise, and clear. Power amplifier amp reference circuit nhb108 dartzeel 200w2.
The nhb 108 is the only amp in the world to offer 100 wpc and much more under 4 ohms while other amps with a single pair usually offer 50 watts at best. Have a look at the company s pdfs, there is a conceptual schematic on the nhb 108 model, you could reverse engineer from there the working currents and voltages. The dartzeel wasnt the only amp ive heard that made drums pop, but it followed that up with stunning textural authority in the sustain, then equally fast and symmetrical decay. Nhb108 model ones audio circuit, as we will soon see, is astonishingly. I received my dartzeel nhb 108 bought at hifiexquis. Recieved my dartzeel nhb108 copy from china page 8. The name dartzeel is the anagram of my family name deletraz. Also if you already have a nbh 108, two pairs of dart to zeel 50 ohms bnc cables 1m and 4m can be negotiated in addition to the preamp. New software comes and goes too fast for this question to be useful, even ignoring the fact that the whole thing is all opinionbased. Casing entirely designed with a dedicated 3dcad software, the new cabinet is m.
This is a rare opportunity to acquire one of the best preamplifiers on the market for a fraction of its price new. The dartzeel nhb 18ns is the logical partner to the now acclaimed nhb 108 model one power amplifier. Its a simple design with awful measurements but it has won some awards for its sound. Jan 04, 2009 completing the package, and for many the most important part, is a feature shared by dartzeel s compatriots at nagra. Passion and love the passion for sound, of course, and love of music, needless to say. Like the dartzeel s original nhb 108 integrated amplifier, the nhb 458 has a zerofeedback, true openloop output stage, so theres no outputimpedance compensation ie, zobel network.
Dartzeel diagrams, schematics and service manuals download for free. One of the secrets of the dartzeel nhb18ns can be found in two words. Marten bird 2 dartzeel pre power vitus rcd 100 cd player on demo at absolute hi end duration. View and download dartzeel nhb 108 one owners manual online. Currently we have 27498 diagrams, schematics, datasheets and service manuals from 978 manufacturers, totalling 66. The inhouse designed, builtin phono stage, is offered as a standard feature. View and download dartzeel nhb108 model one user manual online. A 100 watt per channel design that was the embodiment of simple, elegant and beautifully symmetrical circuitry, it had a build quality and attention to detail second to none. Nhb18 ns reference preamplifier phonostage blue light audio. I havent come across a solidstate amp that does small group classical, acoustic music or jazz combos as well.
The nhb18nss unique circuit board layout allows each optical input to be activated separately. Aug 15, 2015 dartzeel nhb 108 model one power amplifier ser. Nor does it use relay switches or fuses in the signal path. In keeping with the very same philosophy, dartzeel uses dedicated circuits reduced to their most basic form. The absence of global negative feedback ensures an ideal and uncompromising listening experience. New version pcb is green color, we can send the schematics. In a way, the nhb458 is a sign of just how good the first dartzeel product the nhb108 stereo power amp really is. Best preamp for dartzeel nhb108 hi all and happy new year i know theres not best, but i am interested in the experience of nhb 180 owners with different preamps. Dartzeel nhb 18ns preamplifier of all of the components that make up a hifi system, experience shows that it is the preamplifier that presents the biggest enigma. Herve deletraz, the designer and manufacturer of the dartzeel nhb108. Compared to the competition, how would the nhb 458s sound through the maxx 3s in my home system. Here again, there is no application of any overall negative feedback.
And never, ever switch on the nhb108 when its not connected to a loudspeaker. As for the pleasure control here was a little snippet from the 6 moons interview with herve deletraz the designer on it and the patent attempt that was blocked in my first post. Internally, close examination shows an amazing attention to detail but for this kind of money, thats expected. Dartzeel nhb18 preamplifier with two phonostages feeler. It starts with the line stage gain module circuitry used in the altair ii and virgo ii preamps, which uses handselected fieldeffect transistors fets and servo circuits to achieve an essentially perfect balance between the positive and negative halves of the audio signal. However, if you own dartzeel nhb series components, there is another considerable upgrade.
This website is not affiliated with or sponsored by dartzeel. The dartzeel nhb108 model one amplifier nhb stands for never heard before is based, deletraz says, on the triple principles of simplicity, purity, and reliability. Jan 04, 2009 as in the nhb 108, all components used in the nhb 18ns preamplifier, with no exceptions whatsoever, are based on the finest products being produced by leadingedge industries at the present moment. To purchase nhb 108 model 1 spares or accessories, please contact the company via their website or visit an authorised retailer. According to dartzeel, the nhb 108 model one 17 14w x 6 34h x 15d and 65 pounds is the product of three overriding criteria. Best preamp for dartzeel nhb108 audiogon discussion forum. The builtin phono stage after weeks of living with the manley steelhead phono preamp patched into the dartzeel, it was time to check out the nhb 18nss own phono stage. Dartzeel nhb108 model one user manual pdf download. The nhb 108 power amplifier was the first product to appear from swiss based dartzeel. The nhb 18nss unique circuit board layout allows each optical input to be activated separately. Schematics are available on the net, and this amp has even been simulated by some. For a list of authorised retailers please contact the company via their website.
Dartzeel claims 90% of the musical magic after five minutes of. Jean hiraga super 30w classa amplifier schematic and pcb. Regularly updated over a number of years and now reinvented in a model two version, this ultrarapid, dualmono amplifier is the highend offering in the nhb series. The dartzeel nhb108 possess the best treble of any solidstate amp ive encountered. The argo employs the best of constellation audios revolutionary audio technology. The one thing that does bother me about the dartzeel nhb 108 is the cost. Selling this clone dartzeel nhb 108b which is an oem product from jay audio. One of the secrets of the dartzeel nhb 18ns can be found in two words. Dartzeel true passion for music reproduction, which they have nurtured for 25 years, led us on a long quest to design an audio amplifier that can convey the emotions at the heart of a musical performance.
Interview with herve deletraz of dartzeel mono and stereo. Dartzeel nhb18ns manual stereo preamplifier hifi engine. Have a look at the company s pdfs, there is a conceptual schematic on the nhb 108 model, you could reverse engineer from there the working. Free dartzeel diagrams, schematics, service manuals. The task it has to perform is, in theory, pretty straightforward. Now available in four sizes nhb 55, nhb 80, nhb 110 and nhb 150. According to the designer, the only feedback in the input stage is degenerative an unbypassed resistor in the emitter circuit of each device, while the output stage. See more ideas about tube, vacuum tube and valve amplifier. Weiliang breeze audio full replica nhb 108 hifiexquis amplifier no negative feedback circuit solid amp wbanhb108 complete replica dartzeel nhb 108 by weiliang manufacture. The dartzeel nhb 108 possess the best treble of any solidstate amp ive encountered. Breakdowns or faulty parts information about the dartzeel nhb 108 model one, or if you have any difficulties the dartzeel.
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