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Dear Audiophile,
congratulations and thank you for choosing
Crescendo Tuner/USBDAC
.
The
Crescendo Tuner/USBDAC
is an extremely interesting and innovative product. It is not just a Tuner but also includes
an entire high performance USBDAC section. The
Crescendo Tuner/USBDAC
can be seen as two different audio
sources combined in a single piece of equipment, each source corresponding to a different working mode: Tuner Mode and
USBDAC Mode.
The specific circuits for each mode are completely separated physically and just one section at a time is supplied, according to the
selected mode (This avoids any kind of interference between the two signal paths). Instead, the analogue output stage is the same
for both of the modes. Everything has been realized according to the well known
Audio Analogue
experience. The power
supply is based on a toroidal transformer and each section has its own voltage regulator stage.
The tuner is based on a high performance circuit already used by
Audio Analogue
on its tuner products. The whole tuner
section has been realized in a metallic separated box to shield the RF interference and a special buffer stage has been put between
the tuner section and the output stage to further decrease the RF noise.
The USBDAC section is composed by a dedicated section which, working on the USB data, supplies a SPDIF digital audio signal.
The digital audio signal is then converted into an analogue one by a high performance DA section composed by: a 96 KHz/24Bit,
very low recovered system clock Burr Brown receiver (residual jitter less than 50ps!) and a 24 Bit/192KHz Enhanced Multilevel Delta
Sigma architecture DAC (The conversion circuit is placed on a separated board to avoid any high frequency disturbance on the
audio signal).
The
Crescendo Tuner/USBDAC
is controlled by a microcontroller and both the switches on the front board and the
remote switches have different functions depending on the mode the unit is working on. The
Crescendo Tuner/USBDAC
has a very reliable low emission display to not interfere with the audio signals.
All the components, passive and active have been chosen considering their electrical characteristics and sound performance too.
The USBDAC permits you to connect the Hi-Fi system to the PC or MAC via a USB connection. In this way the PC/MAC sees the Hi-
Fi system as its audio board and everything which is played on the PC/MAC is reproduced by the Hi-Fi System. This opens up a
wide spread of possibilities which we think will be soon appreciated by every, also “old style”, audiophile:
•
Listening to tracks in any format (MP3, WMA, FLAC, APE and so on…..)
which you have in your PC via a software player.
In such cases, according to the player, you can also control the PC (Next track, Previous track, Play, Stop, Pause) by the
Crescendo Tuner/USBDAC
front switches or remote.
•
Listening to an on-streaming tuner. On the web there are a lot of tuner stations which transmit on-streaming, so a lot of
stations from everywhere in the word can be listened to.
•
Listening to audio movie tracks which are playing on the PC.
The
Crescendo Tuner/USBDAC
has also a SPDIF Out which can be sent to an external DA converter.
The
Crescendo Tuner/USBDAC
has both the Trigger In and Trigger Out connections so it can be switched on/off by
another unit of the chain and also can switch on/off another unit of the audio chain.
All manuals and user guides at all-guides.com
