DAC Beresford TC-7533 Bushmaster GFmod
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DAC Beresford TC-7533 Bushmaster
DAC i wzmacniacz słuchawkowy od Stanleya Beresforda (UK) znany z ciepłego i analogowego dźwięku za rozsądne pieniądze
Historia DACów Beresforda sięga 2008 roku, a w Polsce 2009. To czasy kiedy zewnętrzne przetworniki cyfrowo-analogowe to była awangarda. A przystępne cenowo DACi oferowało raptem kilka firm na rynku audio. Wtedy furorę robił kosztujący 1200zł Beresford TC-7510, który poprawiał dźwięk odtwarzaczy CD za kilkukrotność jego ceny.
Zupełnie inna architektura wewnętrzna niż TC-7520,
Nowoczesny odbiornik cyfrowy Wolfson WM8804,
DAC Wolfson i pasywny stopień analogowy,
3-punktowa stabilizacja napięcia,
Ręczna lub automatyczna detekcja aktywnego wejścia cyfrowego
Wejścia: 2x coaxial SPDIF , 2x toslink
Wyjścia: RCA fixed , słuchawkowe
Zmiany w stosunku do TC-7530:
- szersze pasmo odbiornika TOSLINK. 25MHz zamiast 15MHz.
- szerszy zakres dynamiki
- wbudowany dodatkowy filtr zasilania
- niższy poziom szumu
- dokładniejsza regulacja głośności dla słuchawek
Balance control with a small balance range. The balance control is hidden behind the volume control.
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-7533 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
Connections |
|
Type |
Digital to Analogue Converter |
Inputs |
2 x TOSLINK |
2 x S/PDIF |
|
Outputs |
2x (L+R PHONO sockets) |
Power supply requirement |
11.5 to 15Volts DC |
Operation modes |
Auto/Manual |
Headphone output impedance |
25 to 300 Ohms |
Line out minimum impedance |
1 K Ohms |
Line Out Voltage |
2Vrms |
Housing |
Full metal body |
|
|
Colour |
Black or Aluminum fascia |
Series |
Digital Audio |
Dimensions |
180mm wide |
|
50mm high |
|
140mm deep |
Packed Weight |
1.5Kg |