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Audio-gd NFB-28

Posted

Pros: Trasparent, dinamic, power, perfect pre-amplifier

Cons: I find none

sorry my English is Google translate

I bought this machine to see if such facilities exist hifi quality level beyond which the feeling of fidelity sound becomes real.
Unfortunately, I'm afraid I have sold too soon because some headphones were dull and boring even using different amplifiers.
Nfb 28 just catcher my attention to listening, the sound is quicksilver even at low volumes, the ability to be detailed is not inconsistent with that of being musical.
When I stuck my headphones for the first time I said to my friend: "seems to connect a krell ksa80 headphones but without that annoying lodness".
I knew who he was until after King Wa !.
So ok the Dac is great, ok the Headphone Amp section is what I dreamed of, let's plug it in to my balanced Amp Melos triode 200 plus jumping good audio Sp9 Research.
Damn sound sosi elegant I heard only with Mark Levinson 38s!
I can no longer connect Audio Research Sp9 I love ..... sic. [/ SIZE]
I tried with these headphones:
AKG K701 mod bass + recable balanced ..... fantastic!
Hifiman 400 Balanced
Beyerdinamics dt880 600ohm
Denon d2000 yet to be processed

In any case, the balanced mode added micro contrast and control as well as raw power without being cold ..


Ho comprato questo apparecchio per capire se come per gli impianti hifi esiste un livello di qualità oltre il quale la sensazione di fedeltà del suono diventa reale.
Purtroppo temo di avere venduto troppo presto alcune cuffie proprio perché risultavano spente e noiose anche utilizzando diversi amplificatori.
Nfb 28 semplicemente cattura la mia attenzione all'ascolto, il suono risulta argento vivo anche a volume basso, la capacità di essere dettagliato non contrasta con quella di essere musicale.
Quando ho attaccato le mie cuffie per la prima volta ho detto ad un mio amico:" sembra di collegare un krell ksa80 alle cuffie ma senza quel fastidioso effetto lodness".
Ho saputo solo dopo chi era King Wa!.
Quindi ok il Dac è ottimo, ok la sezione Amp cuffia è quello che sognavo, proviamo a collegarlo in bilanciato al mio Amp Melos triode 200 plus saltando il buon audio Research Sp9.
Accidenti un suono sosì elegante l'ho sentito solo con Mark Levinson 38s!
Non riesco più a collegare L'audio Research Sp9 che adoro.....sic.

Ho provato con queste cuffie:
Akg k701 mod bass + recable balanced
Hifiman 400 balanced
Beyerdinamics dt880 600ohm
Denon d2000 ancora da elaborare

In ogni caso la modalità bilanciata ha aggiunto micro contrasto e controllo oltre che potenza bruta senza essere freddo..
Audio-gd NFB-28
Description:

Fully balanced design built by discrete analog stages without any OPA and coupling caps in the signal channels, built in real balanced DAC, output for headphone (4-pin XLR or 1/4") and  DAC (fixed output) with preamp (variable output). - Non-feedback ACSS analog output stage. - LED display avoids RF disturbance for better sound quality. - Large R-core transformers and Hi-fi grade parts like DALE resistors, WIMA caps. - Total of 6-group PSUs are used to purify the power supply , the analog amp has discrete PSU power supply. - Four-channel digitally controlled relay-based volume control to avoid channel imbalance and improve sound quality.  -80 steps volume level control in both high gain mode and low gain mode. - 160-step volume control ensures smooth control of the volume level. - 4 digital inputs:   Coaxial RCA / Coaxial BNC /  Optical / USB - 2 analog inputs:  XLR / RCA - DAC output:   XLR / RCA / ACSS  (User can set either variable output level as preamp or fixed output level as dedicated DAC). - Headphone output : 4 pin XLR / 1/4" (6.3MM) SE.

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