Esoteric A-100 Vacum Tube Stereo Amplifier
- 2300.00 £
- Published date: May 24, 2025
-
- Wool, Dorset, United Kingdom
Esoteric A-100 Vacum Tube Stereo Amplifier
⭕ Esoteric A-100 MSW Amplifier. Ex-demo unit in almost like new condition with original box and manuals. Original EU (230V) version.
Additional information:
Awarded Product of The Year 2009 by The Absolute Sound. Esoteric has introduced a 3 stage tube amplifier that can be used as a direct stereo power amplifier or as an integrated (line level), power amplifier. This new hybrid technology incorporates proprietary circuitry and cutting edge tube technology.
The A-100 provides a minimum of 90 watts (Minimim 45 wrms), power output from 4, KT-88s in UL-push/pull operation driven with a direct coupled cathode follower. The cathode follower and voltage amplification stage is directly coupled to form a triple stage combining a variable self-biasing system and a zero voltage control system. The bias system used is an advanced active biasing circuit. This system compensates for fluctuations in bias voltage as supplied to the output stage by detecting cathode current and output level demand. This bias control implementation improves linearity and performance of the output stage by maintaining optimum voltage control. The innovative zero voltage control system stabilizes the cathode follower DC output level to improve operation of directly-coupled circuit components. This occurs in an end to end process from the driver stage to the output stage. Both of these circuits combine to improve the stability and the clarity of the amplifiers output.
The A-100 features a newly designed custom output transformer designed to achieve highly delicate and precise musicality. The amplifier uses specially treated copper foil as the 2nd order coil. This design maintains very tight coupling properties between the 1st order coil. All stages except the KT-88 are powered by fully stabilized power supplies. With this innovative power supply design, the A-100 reproduces an exceptionally deep and finely detailed soundstage.
All tubes except the KT-88 are DC heated. Hum noise is reduced by this heater design. Power supply and output transformers are held by an extremely rigid H structure and circuit components reside in a block configuration surrounding this mainframe design. The massive chassis construction isolates unwanted vibrations and resonance between circuit components and power supplies.
The A-100 is designed for pure power amplification but it also works as an integrated (line level), amplifier by selection from an operating switch on the rear panel designating DIRECT or LINE IN. LINE IN mode activates an input selector (RCA x3 / XLR x1), and also a high quality volume control.
For LINE IN operations an illuminated remote control is included.
Additional information:
Awarded Product of The Year 2009 by The Absolute Sound. Esoteric has introduced a 3 stage tube amplifier that can be used as a direct stereo power amplifier or as an integrated (line level), power amplifier. This new hybrid technology incorporates proprietary circuitry and cutting edge tube technology.
The A-100 provides a minimum of 90 watts (Minimim 45 wrms), power output from 4, KT-88s in UL-push/pull operation driven with a direct coupled cathode follower. The cathode follower and voltage amplification stage is directly coupled to form a triple stage combining a variable self-biasing system and a zero voltage control system. The bias system used is an advanced active biasing circuit. This system compensates for fluctuations in bias voltage as supplied to the output stage by detecting cathode current and output level demand. This bias control implementation improves linearity and performance of the output stage by maintaining optimum voltage control. The innovative zero voltage control system stabilizes the cathode follower DC output level to improve operation of directly-coupled circuit components. This occurs in an end to end process from the driver stage to the output stage. Both of these circuits combine to improve the stability and the clarity of the amplifiers output.
The A-100 features a newly designed custom output transformer designed to achieve highly delicate and precise musicality. The amplifier uses specially treated copper foil as the 2nd order coil. This design maintains very tight coupling properties between the 1st order coil. All stages except the KT-88 are powered by fully stabilized power supplies. With this innovative power supply design, the A-100 reproduces an exceptionally deep and finely detailed soundstage.
All tubes except the KT-88 are DC heated. Hum noise is reduced by this heater design. Power supply and output transformers are held by an extremely rigid H structure and circuit components reside in a block configuration surrounding this mainframe design. The massive chassis construction isolates unwanted vibrations and resonance between circuit components and power supplies.
The A-100 is designed for pure power amplification but it also works as an integrated (line level), amplifier by selection from an operating switch on the rear panel designating DIRECT or LINE IN. LINE IN mode activates an input selector (RCA x3 / XLR x1), and also a high quality volume control.
For LINE IN operations an illuminated remote control is included.
Phone number ✆ 07410 845693
Wool, Dorset
Related listings
-
B&W 802 Nautilus & Mark Levinson No 332
ELECTRONICS Bury St. Edmunds (Suffolk) June 15, 2025 2500.00 £ -
-
Vintage Pair Of TANNOY Monitor Red 15 Or...
ELECTRONICS Portwrinkle (Cornwall) June 15, 2025 3500.00 £
-
-
Audio Research Reference 3 Preamplifier
ELECTRONICS Milton Common (Oxfordshire) June 15, 2025 2500.00 £ -
Mark Levinson No. 26 Preamplifier & PLS-...
ELECTRONICS Oundle (Northamptonshire) June 15, 2025 1500.00 £
-
-
-
Audio Note Japan M7 Preamp Phono Solid S...
ELECTRONICS Overton (Lancashire) June 15, 2025 4000.00 £
-
-
-
Lyrec PTR -1 Frida MK II, High Serial Nu...
ELECTRONICS Epping Forest (London) June 14, 2025 2500.00 £
-
-
-
Complete Nikon Ci-S Ergo Binocular Micro...
ELECTRONICS Chorleywood (Hertfordshire) June 14, 2025 2500.00 £
-
-
Tannoy Chatsworth Monitor Red 12 Speaker...
ELECTRONICS Kirkby-in-Furness (Cumbria) June 14, 2025 2500.00 £ -
-
-
-
Ionic Performer Analog Synthesizer EMS S...
ELECTRONICS Kirkcaldy (Scotland) June 14, 2025 2100.00 £
-
APOGEE SYMPHONY IO AUDIO INTERFACE 16X16...
ELECTRONICS Milford On Sea (Hampshire) June 14, 2025 1300.00 £ -
-
Meridian DSP7000 Reference Active Digita...
ELECTRONICS Bisley (Gloucestershire) June 14, 2025 2000.00 £
-
-
-
KONDO Audio Note KSL-SFz MC Step Up Silv...
ELECTRONICS Stourbridge (West Midlands) June 13, 2025 2300.00 £
-
-
-
Nikon TS100 Hoffman Mod. Contrast Invert...
ELECTRONICS Ledbury (Herefordshire) June 13, 2025 2400.00 £
-
-
-
Megger Delta 2000 Power Factor Test Set ...
ELECTRONICS Clayton le Moors (Lancashire) June 13, 2025 3500.00 £
-
Dynatronix Programmable Pulse Power Supp...
ELECTRONICS Saint Clement (Cornwall) June 13, 2025 4500.00 £ -
-
-
Bowers Wilkins B&W DPM X Maharishi 601 S...
ELECTRONICS Rowsley (Derbyshire) June 13, 2025 2200.00 £ -
-
Save A Fiver, By Buying It Now! SHARMAN ...
ELECTRONICS Chipperfield (Hertfordshire) June 13, 2025 25.00 £
-
NEW !!! DJI Phantom 3 Standard Quadcopte...
ELECTRONICS Norbury (Staffordshire) June 13, 2025 325.00 £ -
Affordable Photographic Cameras For Sale...
ELECTRONICS Bloxwich (West Midlands) June 13, 2025 500.00 £ -
JENSEN G610B SPEAKER & JENSEN A-640 CROS...
ELECTRONICS Sandiacre (Derbyshire) June 13, 2025 1900.00 £
-
-
-
Georg Fischer RA-4 RA 4 Orbital Welding ...
ELECTRONICS Oulton (West Yorkshire) June 13, 2025 1850.00 £
-
LEGACY AUDIO Skyline Surround Speakers
ELECTRONICS Donnington (Gloucestershire) June 13, 2025 1850.00 £ -
-
AUDIO RESEARCH SP20 VALVE PREAMPLIFIER
ELECTRONICS Hayling Island (Hampshire) June 13, 2025 2300.00 £
-
-
2 Near Perfect Condition Jensen Mcmurdo ...
ELECTRONICS Harlaxton (Lincolnshire) June 13, 2025 4300.00 £ -
MCINTOSH MX-150 HOME THEATER CONTROLLER/...
ELECTRONICS Singleton (West Sussex) June 13, 2025 1800.00 £