Our amplifier is engineered for high fidelity and reliability with a straightforward circuit design. It utilizes current production tubes like EL34 and ECC803S, avoiding NOS components for better changeability and using over-specified passive elements to ensure durability.

Key design aspects include:

• Locally Produced Magnetics: All power transformers (PT) and output transformers (OPT) are sourced from high-quality local manufacturers in order to control quality and versatility in specifications.

• Tube Compatibility: The design supports various tube types, including 6L6, EL34, 6550, KT88, KT90, and KT120, with only minor adjustments to passive components needed (no changes to OPT or PT required).

• Operational Modes: The amplifier allows for no Negative Feedback (NFB), no Ultra Linear (UL), or Triode mode operation.

• Enhanced Reliability: Features additional circuitry such as a delay for high tension (HT) voltage to prevent damage at power-up and power filter capacitor discharge at shutdown. Silicon rectifiers are used in place of unreliable diode tubes.

• Operating Conditions: Designed to function with mains voltage of 110-120V/60Hz or 220-240V/50Hz.

• Mechanical Design: The chassis is visually appealing, made from modern materials, with minimal controls and switches for a clean aesthetic.

• Testing and Quality Assurance: Extensive testing is conducted for sound quality and overall performance, with test figures recorded. The amplifier is evaluated using a preamplifier that includes DAC and Bluetooth, and tested with flat input signals, devoid of bass, treble, or loudness adjustments. Testing is performed with CD and FLAC formats only.