Integrated Amplifier A-2 VER2

Key Features

• Parallel Push-pull Output Stage
The output stage features a parallel push-pull configuration with the
same high-speed, high-power TO3P transistors used in the A-3.
• Precise Pairing of Transistors
Each transistor is precisely paired by hFE, eliminating the tonal smearing typically associated with
parallel push-pull designs.
• Reinforced Driver Stage with TO3P Transistors
The driver stage also employs TO3P transistors identical to those in the output stage.
By maintaining a high standing current in the drivers, hFE fluctuations caused by current changes
in the output stage are instantly compensated, delivering exceptionally strong drive capability.
This marks the key difference from the original model and represents a technological breakthrough.
• Refined Voltage Amplification
A newly developed voltage amplification circuit, created specifically
for the A-2 VER2, significantly simplifies the circuit and introduces a
completely re-engineered bias circuit for improved stability and
performance.
• High-Capacity Power Supply
A large, unimpregnated toroidal power transformer has been
adopted. By lowering the output voltage compared with the original, the A-2 VER2 prioritizes
instantaneous current supply capability at low impedances over maximum output at 8 Ω, ensuring
dynamic and responsive performance.
• Relay-based resistance switching volume circuit has been employed as the same as the original.
• Unfixed structure
Increased clearance of the unfixed top cover allows for a more open feel. Other features
incorporate the know-how of the 3 series in the chassis structure. (E-2 VER2 and D-2 VER2 are
also the same.)