Conversely, the AMG STAs innovative bridging circuit utilises a design we call Single-Ended Direct-Inject Bridge Technology, in which the mono mode, in addition to acquiring more than double the power, sounds livelier and more dynamic. The NuPrime STA-9X, a 2 X 130W Class A+D stereo amp, bridgeable into a 330W mono amp, is designed with enhanced even-order harmonic circuitry that mimics the most attractive features of tubed and Class-A amp sound without incurring their drawbacks and limitations. But thats not to say that it smooths over details. Its price is more than twice as much as 2 AMG STA for a final rendering that would then seem quite close? Used Nuprime Sta for sale on 300+ second hand hifi sites & shops. That deep noise floor allowed the music to shine with a crispness and dynamism that I absolutely loved. Heres a nice anecdote. They are incredibly revealing, like no other speaker I have ever owned. Regular price $3,999 . Combine the AMG-STA with a great volume-controlled DAC and youll have a nearly unbeatable system. After having dinner we repeated the playlist only to look each other in the face after 20 seconds as we both felt that the sound was MUCH improved. I am very positive about the preamps looks and functionality. Can it really be the obvious guess (based on christiaans review comparison).US high end dealers hate NuPrime cause they make their big margin equipment look bad??? Between single and dual amps, if ever there was a no-brainer decision, this is it. The standard method for bridging a stereo amp into mono employs a series of op amps (OPA) in order to invert the input signals to one of the stereo amp, thereby creating an opposite phase, which can then be combined to increase power. NuPrime Audio AMG STA Power Amplifier 1,495.00 1,245.83 Exc. At the same time, it was a great musical pleasure to listen to STA. The AC power input from the Inlet Connector to the power transformer utilizes a high current welding line to provide maximum power transmission. 58K Hz @ -3dB, Sensitivity: 1.2 Vrms @ Stereo; 0.95 Vrms @ Mono. I didnt want to spend too much as it is a summer place, hence the AMG STA tryout. REL has provided instructions for connecting Class-D amp with floating speaker outputs to their sub woofers, please contact REL. Active Low Frequency and Harmonic Gain control feature. Thanks for great reviews. The power amp supplies a solid 130Wpc into 8 ohms in stereo mode and 300Wpc into 8 ohms in mono mode. The ML Masterpiece series are out of my financial reach unfortunately. All said they dont even want to spend the time to listen (!?!?!?) Its also a wise decision to test equipment in someone elses system in order to get a broader grip on how the equipment under review behaves with other components. The AMG STA comprises of several state-of-the-art innovations in power amp design. The dynamics of the design and the single-ended Class A circuit enriches the natural second harmonic. Horns were sharp and evenly spaced, and their upper registers had a bit of sparkle. So it has me scratching my head, why do US dealers hate NuPrime?? Detail, resolution, dynamics, and speed are in the ST-10 ballpark, yet the sound is quite different. Regular price Sale price $999.00 The AMG series front panel embodies its spirit. The standard method for bridging a stereo amp into mono employs a series of op amps (OPA) in order to invert the input signals to one of the stereo amp, thereby creating an opposite phase, which can then be combined to increase power. For such application, usually the receiving devices should have DC offset blocking capability because some amplifier by design has floating ground (DC offset) on the speaker outputs. Howd I get there. AMG STA sounded smooth and relaxing. The bass was no doubt faster/tighter but it was not as powerful or well rounded as my 4b3. For the following review, I kept the knob turned to the left, which turns the feature off. Happy New Year! First of all a big thank you for your site which is worth gold to me. Where this dual-mono configuration really worked was with the Polk L600s, the more difficult pair of speakers to drive. I never wrote back as to my Bryston 4b3 vs Nuprime AMG STA comparison. Im not sure what you are referring to but I judge audio equipment by ear, not by spec. JWs experience makes a lot of sense to me as this very much ties in with the common differences between Class-A versus Class-D. To me, however, the differences are smaller because as you know I use Class A/B transistor amplification and I am used to the relatively more stilted and compact kind of delivery. The AMG-STA uses the Single-Ended, Non-Negative Feedback Class-A module partners with a new Double feedback Class D circuitry. Indeed, unlike the ST-10, the AMG STA has so much finesse and is so retina-like in its resolution and fluidity that it will take a particularly bad cable to make it sound rough or dry. At some point, I may review the Kinki amplifiers but not for the foreseeable future. when new listings are found, 2023 HifiShark.com - terms and conditions of use - privacy policy - cookie statement, Hifishark.com uses cookies to improve your experience. The backgrounds were shockingly black, and it almost felt as if the AMG PRA preamp was nearly transparent, if youll forgive a reviewing clich. I find that your reviews are well done with comparisons with other products and sound specifications which are well rendered. Hi Per, I agree on several points, especially the fan noise. The amps dynamics and joy-de-Vivre will likely put a big smile on your face. Hi Ben, In retrospect, the Kinki will be closer to the ST-10: a solid and bold sound but not the most refined. Over for another review are a very special pair of WvL SON loudspeakers that use a Field Coil woofer combined with an Air Motion Transformer tweeter to arrive at a super-expressive sound that is utterly revealing of everything that is connected upstream. So, in comes your NuPrime AMG, to see which one it did the most for. The NuPrime STA-9X is a 2 X 130W Class A+D stereo amp, bridgeable into a 330W mono amp. How did AMG STA mono achieve better sonic characteristic, in addition to more power than AMG STA stereo ? Also, Logans tend to be open and detailed but still relaxed and even a little sweet. This design allows the most delicate details in the audio signal to carry through the chain. Oh, and keep those reviews coming, they always guarantee interesting reading material for us audiophiles. Hi Christiaan, Youve confirmed what I thought that under $10k it would be very difficult to build a cabinet speaker that equals or improves upon Logans. At the AMG HPAs retail price there are precious few American or European preamps that will perform better and certainly even fewer with such great ergonomics. Sensitivity: 1.2Vrms stereo; 0.95Vrms mono My review sample came in dark gray, and looked good in my relatively tight equipment rack. The main current path, adopting a large-capacity current design, uses a low-impedance copper plate to maximize power delivery to the amplifier circuits. Expensive. It worked well with my Wharfedale 225s, and actually sounded fairly nice with my Omen Dirty Weekend on its lowest setting. Choosing a selection results in a full page refresh. The AMG STA has a flavor of its own, so it is hard to compare it with the Evolution One, which derives some of its design from or the similarly priced ST-10. As great as the combo is, the AMG-STA power amplifier really is the star of the show. I started switching the AMG for the IDA-6, I cant tell the difference. Its class-leading features include 1M Ohm input impedance, high instantaneous current for power delivery, 700kHz switching frequency, and Single-Ended Non-Negative Class A module coupled with Double Feedback Class D module for 300W mono amp power. JavaScript seems to be disabled in your browser. Up for sale are one pair of the beautiful reference Nuprime AMG STA amplifiers in like new condition. The Class D oscillating frequency has increased to 700kHz, which is 1.4 times that of the STA-9. Just to make sure I was obtaining the maximum performance, the preamp has been allowed a copious amount of time (over 2 weeks) to run in and warm-up, prior to the start of my comparisons. But then the sound also immediately became much more forgiving, and the soundscape clearly grew in all three dimensions. Thanks again for all your thoughtful input. Very recently I purchased an Audio-gd HE-1 preamplifier which is a step up from the Master 1 you reviewed earlier and now Im looking for a power amp to match it with. They are not perfect but neither are the Logans. The AMG STA, however, has more of a spotlighting effect, where performers are focused on getting your attention. The combined result is a musically always engaging sound that is solid and full-bodied, smooth and refined yet highly detailed and transparent, with perfect pacing, and great dynamics. So whats the pointand how might it help your readers on the NuPrime AMG subject? Its class-leading features include 1M Ohm input impedance, high instantaneous current for power delivery, 700kHz switching frequency, and Single-Ended Non-Negative Class A module coupled with Double Feedback Class D module for 300W mono amp power. Cheers, Likewise, the bass became more nuanced and detailed while the weight was still present. +Class D design of the STA-9 with a design concept taken from the high-end NuPrime AMG-STA amplifier. The AMG series front panel embodies its spirit. Im not saying that more distortion is better (in principle it is not). It is milled from a 15mm harden aerospace aluminum alloy using a four-axis CNC machine with a diamond cutter through a 48 steps process. So, this is a long story just to reiterate that I stand by all my statements regarding NuPrime. Simple concept. However, AMG STA does things differently. First up, I plugged in a single AMG STA amplifier with the AMG PRA preamp. The 300 Mhz bandwidth JFET provides ultra-high input impedance and wide-band fast response. Of course the NuPrime kills my Sunfire in every way except maybe bass heft. In the midrange, the piano and horns were smooth and silky with a hint of nice, heavy warmth down in their lower regions. NUPRIME Thanks for your informative and comprehensive review on the Nuprime AMG STA stereo power amplifier. AMG PRA Preamplifier. The following models have no DC offset on the amplifier speaker outputs and the negative terminal is also the ground: How can the $500 IDA, that is also a pre and DAC sound as good as the $1700 AMG??? The amps were purchased new by me from Summithifi USA on March 2022.The amps work %100 flawlessly with no issues and they are in new condition! It also meant that I actually stopped thinking more about the sound, and instead just enjoyed the music. Its too much for me, too. I agree with your thought that a DAC is really what will bring out the details, I therefore agree a preamp isnt something I feel my 4B3 needs. Price Listed Finali Nuprime Subito 1,400 Jan 19, 2023 Nuprime Evolution Dac Marktplaats 2,490 Jun 23, 2023 Nuprime DAC 9 Kleinanzeigen 599 25% May 2, 2023 Nuprime Stream 9 Kleinanzeigen 790 Jun 22, 2023 Nuprime IDA 8 Canuck Audio Mart CA$800 Jun 24, 2023 Nuprime IDA8 Canuck Audio Mart CA$900 Apr 23, 2023 NuPrime AMG Audiogon $1,900 Dec 13, 2022 Stereo Power: 2 X 130W @ 8 Ohm & 2 X 200W @ 4 Ohm, Frequency Response : 10Hz~50K Hz +-0.2dB @ 8 Ohm. A pair of AMG STAs is certainly worth investigating and is on the list of things to do. I have a degree in English from Temple University and a Masters in Fine Arts with a specialty in poetry from the University of Notre Dame. I never felt as though the AMG STA lagged behind or ran out of headroom powering the Zu DWs, even on this very dynamic recording. VAT | | Finish: Share Tweet Description Specifications Customer Reviews (0) NuPrime Audio AMG STA Power Amplifier The AMG STA comprises of several state-of-the-art innovations in power amp design. I did have a chance to test the Class Delta Pre + Class Delta Stereo Power Amp at home for a week, so I was extra curious to find out if we had similar findings. Whether used as a single stereo model or as a double-mono pair, the AMG-HPA is an absolute HFA Favorite. NuPrime DAC-9 DAC/Preamplifier. My review sample came in dark gray, and looked good in my relatively tight equipment rack. NuPrime STA-9, MCH-K38, IDA-6, IDA-16, STA-9X, AMG STA, The following models speaker outputs can not be connected directly to sub woofer input: It is not warm or smooth but sonorous, rich and very robust and I think it will perfectly supplement the slightly lean Logans in the bass and lower midrange while being compensated in the treble by the Logans openness to make for a nice balance. The dynamics of the design and the single-ended Class A circuit enriches thenatural second harmonic. Retail Prices: AMG-PRA preamp: 1.595 euro AMG-STA power amp: 1.595 euro In the initial NuPrime AMG review, I have focused mainly on the AMG-STA power amplifier, with the AMG-HPA headphone amp-preamp thrown in as a bonus. if I brought it in which I found shocking. https://components101.com/connectors/35mm-audio-jack. The Jorma Trinity worked perfectly and I imagine that there will be plenty of other speakers cables that perform well, as long as they are fast-sounding, articulate and essentially neutral. I have gotten unexpected though very uniform answers. The power supply uses a 380W special winding power transformer, which has 30% more peak power output of a similar volume transformer. The remote is heavy enough to break a toe if dropped and seems to be milled from solid aluminum; it performed all the functions I could possibly wantfrom power to volume control to input switching.
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