BAT - Balanced Audio Technology
Iconic Brand, unul din titanii pietei Americane si unul dintre cele mai celebre la nivel global.
Cu o istorie ce depaseste deja 25 de ani, cu produse fabricate exclusiv manual, in USA,
BAT este o adevarata Institutie.
De o calitate incontestabila si o adaptabilitate de invidiat, in si pe diferite sisteme audio,
indiferent ca e vorba de produse exclusiv pe Lampi sau de produse Solid State ori Hybrid.
Muzicalitate, rafinament, detalii, design, fiabilitate.
Toate din 1 Septembrie 2022 in familia STEREO PLANET.
VK-90t Tube Power Amplifier
Active Dual-Stage Current Sources for Improved Linearity and Accuracy
VK-90t extends the advantages of active current sources by including these in both the first
and second gain stages of the circuit design.
There are multiple benefits to implementing active current sources (solid-state as well as tube)
for the first two stages.
Specifically, the linearity of the gain stages improves; the adjustments for the first and second
gain stages become independent and more easily optimized; and the active source components
operate at lower stress level, improving reliability.
The final result is an impressive improvement in the linearity, yielding a more accurate representation
of the output signal to the original input signal.
And that, in essence, is the measure of any amplifier.
The Sound of Musical Truth
The Balanced Audio Technology VK-90t power amplifier features a fuse-less protection circuit, active
current sources for its two gain stages, intelligent auto-bias circuit with LED indicators, and high-current,
all-triode, zero-feedback, fully balanced topology.
Its 25th anniversary industrial design is complemented by new, silver-gold oil capacitors and ultra-transparent
internal wiring in the signal path.
With VK-90t, BAT realizes that serious listeners want unique technology, user-friendly experiences, and
faithful-to-the-source sonics in high-end equipment.
The equivalent of having two single-ended amplifiers per channel, VK-90t meets these demands and more -
and sounds mesmerizing minutes after being turned on.
VK-90t also means there are no tubes to bias; no fuses to replace; no pentodes imitating triodes; and no
direct current at the tube output stage.
VK-90t is the sound of the future - and musical truth.
Fully Symmetrical, All-Triode Circuit Banishes Conventional Drawbacks
In a world of cookie-cutter pentode/tetrode designs and frail single-ended counterparts, VK-90t stands apart.
Its design is fully symmetrical from beginning to end.
You can think of it as having two single-ended amplifiers per channel, with their waveforms summed at the
output transformer.
Since no direct current flows through the output transformer, the latter is a true wide bandwidth design that
also reduces low-frequency distortion.
When you combine VK-90t’s fully symmetrical circuit with its high-current, all-triode, zero-feedback, fully
balanced topology, all of the drawbacks of push-pull and single-ended amplifiers are banished.
Specifications
Output per channel at 8Ω/4Ω (@ less than 3% THD):
75W Stereo / 150W Mono
Configuration:
Available as either a stereo or moblock from the factory
Stereo amplifier is easily converted to monoblock
Design topology:
Symmetrical single-ended bridge design
Tube Complement:
4 x 6C33C-B
6 x 6SN7
4 x 6H30
Signal Path
All triode signal path from input to output
Second generation silver gold oil capacitors
Second generation ultra-transparent internal interconnect
Ease of Use
Intelligent automatic bias combined with fuseless protection circuit
Global Feedback: None
Chassis Construction
All aluminum 25th anniversary design
Frequency Response: 7Hz to 200kHz
Input Impedance (each phase): Stereo 200 kΩ / Mono 100 kΩ
Input Sensitivity: 1V
Energy Storage: 600 joules
Gain: 26 dB
Power Consumption (Idle/Full Power)
500 W / 1000 W
Dimensions (W x H x D): 43 x 20 x 61 cm
Weight: 40 kg
Colors: black, silver