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Audio Analogue Bellini Virtual Battery REV2.0
PREAMPLIFIER
High performance Preamplifier With Virtual Battery Supply
The new Bellini Virtual Battery REV2.0 preamplifier represents a quantum leap for Audio Analogue’s composers line, in sound
quality, manufacturing and assembly perfection, look & style and performances, yet retaining the famous family look and ease of use.
The elegant yet sober appearance of the Bellini Virtual Battery REV2.0 will allow for a discrete placement in every domestic environment,
with both classic style or modern furniture.
The new, totally remote-controlled discrete components circuit deliver clean, crystal-clear with bandwidth and dynamics that meet
the requirements from the new high-resolution digital sources.
The unique off-line virtual battery supply, improved version of the one already introduced with the Aria phono preamplifier, ensures
an absolute immunity to every disturbance that could come from the mains through the power transformer’s and regulators’ parasytic capacitances.
The high-performance discrete components preamplifier circuit operates a perfect interface between the integrated bufferless resistor network
potentiomenter and the power amp’s input, contributing to the balanced sound of the amplifier. Solid state input selectors allow for indefinite
best quality performance (no sound detriment due to metallic contacts ageing and wear-out).
The special line/phono input can be set to operate as a phono MM input, phono MC, or even line. It uses the samerefined, high-dynamics
circuit as the Aria phono preamplifier and gives user the maximum flexibility to set the interface to the cartridge and the gain.
The balanced input and the quadruple outputs (two single-ended sets and two balanced sets) allow for a universal interface capability and
passive bi-amping. A 12V trigger output allows for slaveing the power amplifier or any other equipment switching to the Bellini Virtual Battery
REV2.0: all the system can be turned on and off using the preamplifier’s remote.
A special bypass feature, selectable by remote’s “setup” option, allows the user to turn the Bellini Virtual Battery REV2.0 in a straight line from
a specified input to the outputs, to include the preamplifier in a multichannel system in which the related power amplifier is used to drive the
front speakers, while using the same speakers for two channel listening using the stereo sources connected to the preamplifier.
The seven-keys solid brass remote control allows for a more flexible control of the Bellini VB. Of course, all the main features of the amplifiers
can be used by the front panel’s simple controls.
Great care has been used in the passive and active components selection, as usual for Audio Analogue.
Audio Analogue Maestro Stereo line Preamplifier SE
PREAMPLIFIER
MAESTRO LINE PREAMPLIFIER SE: no envy for Perfection!
The Maestro Line Preamplifier SE has been developed based on the Maestro Line Preamplifier, completely renewing the power supply stage and
improving the preamp section after highly accurate detailed listening tests performed on the passive components. The implemented technologies
and the manic attention in choosing each passive component has elevated the sound output to absolute reference quality and has made the sound of the
Maestro Line Preamplifier SE a benchmark in the category of preamplifiers of the very highest level.
VR Power Supply (voltage reference): The power supply we have designed develops a philosophy different from that generally followed in the audio field.
In fact, the power supply is normally obtained from a secondary stage of the transformer whose voltage is rectified and then stabilized and filtered as much
as possible in order to reduce the ripple. In the Maestro Line Preamplifier SE a “traditional” power supply, such as the one previously described, has been
implemented to have a very clean voltage (as much as 3 different stabilization stages have been used for each supply!) but the voltage is not used to supply the preamplifier
section! Instead, the voltage, which is already very clean, just supplies the circuit where the proper voltage for the preamplifier circuits is generated.
The voltage to supply the preamplifier section is derived from an extremely clean and stable (both thermically and temporally) voltage reference. Such
voltage is hence treated to reach the level required for the preamplifier section. All the chain has been designed using extremely low noise strategies.
The board for example is a 4 layer one (to have a generalized bypassing of every signal) as apposed to the standard 2 layer boards commonly used in the audio field…
Pre section: the preamplifier section has been revisited changing the passive components after a series of highly accurate listening tests. In the course
of such tests many different kinds of passive components have been checked in several different positions to obtain the best sound coherence. Moreover,
in some parts of the board the lay out has been changed to emphasize some particular characteristics.
All the analogical circuits are made using discrete components, and have a large-pass band and low-feedback factor.
Only the Highest-quality passive components have been used; lowest-tolerance metallic layered resisters (MIL standard); low-tolerance, non-polarized
polyester / propylene condensers; high-speed, low-loss, high capacity electrolytic condensers; organic-electrolytes, low-capacity electrolytic condensers.
The integrated-resistance network volume controls used have no buffer for maximum sound transparency.