BRYSTON 28B-SST2

PW17.01.2011

Power amplifiers

In Bryston they have managed to refine their amplifiers to the degree that can be considered a state-of-the-art for solid-state amplification. I mentioned that lesser amps of Bryston are all bargains and for reasonable money one gets the taste of elite. The 28B-SST2 is the elite. If you consider its capability to drive anything on the planet and extended 20 years warranty it could be as well the last amp you’ll ever need.

Funkce a forma

93%
Ergonomie
82%
Zvuk
94%
Zpracování

With the 28B-SST the input stage has been redesigned – instead of a single differential op-amp there are two differential op-amps that copy the out-of-phase architecture of the output stage; both signal paths are therefore totally symmetrical. The other important element of the 28B-SST’s construction is elimination of most internal wiring in favor of direct soldered contacts on PCBs. Finally there is a new oversized power transformer with 2000VA rating that lends the 28B-SST the ability to deliver unbelievable 1300W into 8 ohms for monophonic channel. The most other building blocks are inherit from the 7B-SST including its bipolar nature but excluding a new ON-OFF button with very smooth operation. There is nothing to mention on the Bryston’s faceplate except this button and a small green diode that goes orange in case of overheating or red if the amp is overloaded or clips.

On the 28B-SST rear panel you would find a circuit breaker switch, a power-up mode switch and the gain (23dB/29dB) selector. Also present are the single-ended and balanced inputs and two pairs of bi-wirable speaker terminals that accept bare wires, small-sized lugs or bananas. Yes, and there are also two handles on the rear panel that greatly facilitate any manipulation with the amp – a feature that is often missing with competitors and which is quite essential if you want to avoid damages to your health or equipment.

Apart from the impressive 1,3kW output into 8 ohms (Bryston does not specify the output into 4 ohms but theoretically it should reach values around 2kW) the monoblocks boast of not less impressive signal-to-noise ratio that exceeds 110dB, at least on paper. Considering the overdimensioned power handling one cannot expect the 28B-SST to be environmentally very friendly: it consumes 215W at idle without playing a single note. This is a minor issue as high-end audio is not a green hobby at all.

Nízké frekvence

Váha
91
Výbušnost
91
Artikulace
91

What the Class-A and the 28B-SST do not have in common is the shuddering power of the Bryston’s deep bass as well as huge macrodynamic sweeps that make anything like The Dallas Wind Symphony and Vaclav Nelhybel’s Trittico (Frederic Fennell, Reference Recordings) an exhilarating experience. The way the 28B-SST handles the sound of brass is almost brutal in its sincerity, yet colorful and full of inner details. In dynamic crescendos you would feel no strain and listening at realistic volumes (I can afford it as my house is quite remoted from the nearest neighborhood) only makes the Bryston even better. I cannot imagine that the power of the Bryston would be insufficient in any home set-up.

Čistota rozlišení

Detail
92
Vzduch
90
Transparentnost
90

Recently we have reviewed Bryston's 7B-SST2. Switching to the pair of 28B-SSTs was a sonic ressurrection. The mechanical feel was gone and the Rachel Podger´s violin suddenly materialized in space, acquiring body and dimensionality. Suddenly I listened to real strings caressed by a real bow. The 28B-SSTs delivered both attack and textural detail, their sound was richer and more focused in more precisely drawn soundstage. Though it was not an ultimate holographic experience I’m used to get from the best tubed or Class-A amplifiers it was definitely the best sound I have ever heard from any Bryston.

Tonální věrnost

Témbr
84
Dynamika
92
Časování
93

What the Class-A amps and the 28B-SST do have in common is the midrange fluidity. The mids are very smooth with no sense of grittiness which is the best witnessed on vocal performances like on XRCD Best Audiophile Voices (JVC). What you hear is absolutely seamless sound with palpable images that reminded me of the good old analog days, this time with better dynamics and higher clarity.

Prostorovost

Trojrozměrnost
91
Šířka scény
91
Hloubka scény
91

Bryston has earned a favorable reputation in professional audio and some of their finest products found their homes in famous recording studios, for instance Polygram and Abbey Road studios, or are endorsed by Telarc of James newton Howard (this is the gentleman who composes some of the finest movie scores today). If you plan to use a Bryston in a studio you will most likely prefer black finish with optional rack-mounting capabilities. Both are available.

Cena v době recenze:435 000,- Kč

Doporučení prodejci

Hifi Store, Praha

Připojené komponenty

  • Sources: Accuphase DP-78, Linn Unidisk 1.1
  • Amplifiers: Bryston 7B-SST2, Bryston 28B-SST2, Spectral DMA-150
  • Interconnects and speaker cables: Accuphase, MIT Ultralinear 750
  • Loudspeakers: Wilson Audio WATT/Puppy 8
  • Power conditioning: Furutech Daytona E303E

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