LJ 2x100W Class-AB JFET-MOSFET Push-pull Amplifier (inspired by Goldmund Mimesis 3)

Merek: LJ Audio, Indonesia
Kode Produk: GMM3 Ver #3
Ketersediaan: Tersedia
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Adapted  from the legendary: Goldmund Mimesis 3 Amplifier circuit, one of the best amplifier ever made. According to Audiogon, not much more to say about Goldmund Mimesis 3 Amplifier other than it's the best of solid state amplifier. What makes it such a legend is its combination of speed, resolution and drive, yet all within the context of a warm, non-fatiguing musicality. It's totally non-cerebral.

This is 2x 100W JFET-MOSFET push-pull custom amplifier by LJ Audio. Custom made only, approx lead time: 2 weeks.

  • Model: GMM3 ver #3, August 2011 (1st version on 2007).
  • Design:
    • Input stage: A-class J-FET LTP (long-tailed pair).
    • VAS (voltage amplifier stage): A-class LTP.
    • Driver stage: A-class.
    • Output stage: AB-class power MOSFET, approx 2x 5W class-A, 2x 150W class-B.
    • Built quality design: neo classic like tube amp layout (trafo, capacitor, heatsink, switch and connector on top of plate).
    • Circuittry and technical stuff here.
  • Features:
    • Loudspeaker protector module with triple protection.
  • Key Parts/Components:
    • Very low noise J-FET: 2SK363 or 2SK170.
    • High voltage BJT: complementary pair MPSA42/92, MJE340/350 gold pin (hard to find).
    • Power MOSFET: complementary pair 2SK1058/2SJ162.
    • Diode rectifier: Motorola 35A, bridge (upgradeable option).
    • Resistor: Takman (Japan), Dale (USA).
    • Capacitors (upgradeable option): Wima (Germany), Elna (Japan), Hitachi (Japan), Nippon Chemi-con (Japan), RS (Singapore).
    • Transformer: LJ custom trafo.
  • Chassis: LJ wood chassis, black piano gloss finish, campagne gold top plate, potted transformer, heatsink + aluminium top plate.
  • Construction: PCB.

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