Zesto Audio Bia 200 Select Class A

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Zesto Audio Bia 200 Select Class A

Zesto Audio – Bia 200 Select Class A Stereo Power Amp

STATE OF THE ART TUBE DESIGNS FOR MUSIC LOVERS!
BIA 200 SELECT, 100 WATT CLASS A STEREO POWER AMP

Zesto Audio Bia 200 Select Class A

• Zesto Audio Bia 200 Select Class A  Key Features
• The Bias Select switch is engineered with 3 bias settings for 4 different output tube
  Compatible with KT88, KT120, KT150 and KT170 output tubes
  Bias Select switch is easy to use, change on the “Fly” so you can hear the difference
  Auto Bias is safe, consistent and settings are always perfect
  Class A power is fast for a more lively, immediate response to your music
  4, 8 & 16 Ohm taps gives you options for your speaker preference
  Dual Mono gives you less cross talk and better stereo imaging
  Choice of high quality gold plated Single Ended RCA or Balanced XLR connectors to suit your needs or cable preferences
  True transformer differential balanced XLR inputs for the best noise rejection
  Independent Left and Right ground switches on the XLR balanced inputs to eliminate ground loops and hums
  No Negative Feedback design does not modify or compress the musical signal
  Large custom Toroid is higher voltage for increased performance and lower noise
  Global mains power supply can work all over the world
  Provides plenty of gain for your system
  Push-Pull/Ultra Linear circuit design provides lower distortion, more power, and a better performance out of your tubes
  Low noise levels allow really dark black quiet musical passages
  Non-inverting polarity retains the same phase as the input (so your trumpets blow and don’t suck)
  Gold pin sockets are more reliable because gold doesn’t oxidize when it heat cycles
  Matched quad KT150 output tubes retain the stereo balance and lower noise
  Elegantly designed, heavy duty 14 &16 gauge zinc plated steel enclosure to accommodate the extensive grounding scheme
  The optimized frequency response provides the best musical range to benefit the natural harmonic structure of the instruments
  All fuses are easily accessible
  Each unit is hand built “Made in the USA”
  pecifications (based on KT150 tubes)
• Output
• Class A
  KT150 = 100 Watts per channel into 8 Ohms
  4 Ohm, 8 Ohm and 16 Ohm output taps
  10A, 7A and 5 Amp 6mm x 32mm Slow-blow speaker fuses for outputs
  Eight 5-way binding posts
  Non-inverting output polarity
  Push-Pull Ultra-Linear design
• Power rating for Auto Bias Select Switch Settings
• Left Position:
• KT88 = 60 Watts per channel,
  KT120 = 60 Watts per channel
  KT150 = 60 Watts per channel
  KT170 = 60 Watts per channel
  Middle switch position:
• KT120 = 85 Watts per channel
  KT150 = 85 Watts per channel
  KT170 = 85 Watts per channel
  Right switch position:
• KT150 = 100 Watts per channel
  KT170 = 100 Watts per channel
• Inputs
• Transformer floating ground differential balanced XLR inputs
  Left and right balanced inputs (pin 2 hot), impedance 10K Ohms
  RCA single ended inputs Left and Right with impedance of 47K Ohms
  Independent ground lift switches on left and right Balanced inputs
  5 Volts RMS input to reach rated output
• Detailed Specs
• Dual Mono
  Auto bias
  No negative feedback
  Frequency response 20Hz to 30Khz ~ 3dB
  Total Harmonic Distortion ~ 0.22% at 1W into 8 Ohms
  Gain of 24dB
  Noise level > 2mV -RMS into 8 Ohms with input shorted
  1% metal film resisters throughout
  Polypropylene capacitors throughout the signal path
  Power
• Custom Toroidal power transformer with global mains
  15 Amp IEC power mains connector
  120 Volts AC mains with 8 Amp 5mm x 20mm slow blow fuse
  Optional factory installed 220V, 230V/240V 50/60Hz with 4-amp slow blow fuse
  Power consumption at rated output 517 Watts
  Front panel on/off switch with green LED indicator for high voltage and amber LED for low voltage
• Active Components
• Matched quad set of four (4) KT150’s vacuum tubes
  Four (4) Gold pin ECC82 (12AU7) vacuum tubes
  High quality gold plated ceramic sockets
  Other Features
• Each unit is made by hand
  50-hour factory burn in on all circuits and vacuum tubes
  Dimensions 17″ W X 20″ D X 10″ H
  Weight 64 (29Kg)
  Shipping box = 27” x 27” x 13” (5 cm x 68.5 cm x 33 cm)
  Shipping weight: 80 pounds (36 kg)
  16 and 14 gauge Zinc plated steel enclosure
  Two year limited warranty
  Six months warranty on 12AU7 Vacuum Tubes
  Ninety day warranty on KT150 Vacuum Tubes

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