nowy DAC i wzmacniacz słuchawkowy od Stanleya Beresforda 

Zmiany w stosunku do TC-7530:

- możliwa praca jako PREAMP
- asynchroniczne wejście USB 24bit 192kHz
- możliwość zasilania bateryjnego 12V

- szersze pasmo odbiornika TOSLINK. 25MHz zamiast 15MHz.
- szerszy zakres dynamiki
- wbudowany dodatkowy filtr zasilania
- niższy poziom szumu
- dokładniejsza regulacja głośności dla słuchawek

 Nowoczesny odbiornik cyfrowy Wolfson WM8804,

DAC Wolfson i pasywny stopień analogowy,

3-punktowa stabilizacja napięcia,

Ręczna lub automatyczna detekcja wejścia cyfrowego

Wejścia cyfrowe: 1x coaxial , 2x toslink, 1x USB , I2C*

Wyjścia analogowe: RCA stałe i regulowane , słuchawkowe

 *umożliwia późniejszą rozbudowę kiedy będzie dostępna

 RECENZJA

http://hd-opinie.pl/18774,audio,test-przetwornika-ca-beresford-bushmaster.html

 OPINIE o Beresford Bushmaster :

"IBass is a revelation, quite staggering when I was playing Avatar last night with its transient thumps and huge waves of deep bass."

"Stereo focus and fine detail is a step-up from what I have heard before - from StanDACs or anything else for that matter.

Delicacy, fine detail, articulation - all exemplary.."

http://www.theartofsound.net/forum/showthread.php?t=9691

http://www.theartofsound.net/forum/showthread.php?p=195337#post195337

DC Linearizer Low Noise Filter

External DC power supplies are a known source of RF noise. Our own unique DC Linearizer circuit transforms almost all of that RF noise into a clean DC voltage. The result is then fed to a Low Drop Out regulator circuit. We employ separate regulators for the supply of power to the TOSLINK and coax input circuit, digital and analogue signal processing circuit, and the headphone amplifier circuit. The result is an analogue sound with firmer and deeper bass, more detailed midrange, and crystal clear treble.

High accuracy crystal controlled receiver chip for low jitter.

Many agree that a low jitter ability heavily influences the performance of a DAC. The Bushmaster uses a crystal controlled receiver with one of the lowest jitter performances possible from a receiver chip. At 50ps few other DACs can match or surpass the Bushmaster in terms of jitter rejection.

Simple Analogue Filter Circuit.

There has been much debate as to how much damage is done to the audio signal by the various digital and analogue filtering networks that are found in a DAC design, and whether filters contribute to grainy high frequencies. The technology used in the Beresford Bushmaster relies instead on a simple HF analogue filter that operates outside any feedback circuit and outside the audio spectrum. This makes the Bushmaster less prone to anti aliasing filter residues and noise, and produces a far cleaner and detailed treble response.

Asynchronous SPDIF to I2S signal transfer

In order to correct timing and data speed transfer errors the TC-7534 uses a asynchronous buffer with a length of 1024 bits to take care of time period related errors.

Direct Coupled Analogue Output Stage

There are no opamps, muting circuits, or capacitors between the DAC chip and the output sockets to affect the accuracy of the audio signal. This allows the Bushmaster to operate down to 1Hz. The Bushmaster is therefore also suitable for DVD audio application, which can go down to 5Hz or lower.

High Current Class A-B headphone circuit.

The Bushmaster headphone amplifier circuit is designed to drive even the latest high-end headphones and reproduce musical detail that these headphones are capable of. A generous signal headroom overhead, low noise circuitry, and high output current ability are key factors that make the headphone output on the Bushmaster a major talking point with existing owners.

LED OFF during music playback function
The Bushmaster MKII has a LED OFF function that can be set to operate when there is music playing. So that way you can make sure that no LED noises can bleed into the sound.

12 Volt battery operation option.

Due to the highly efficient design and low energy requirement placed on the power supply, the Bushmaster is capable of operating from a 12Volt battery