Gold Note PA-1175 MkII Power Amplifier

The Gold Note PA-1175 MkII Power Amplifier is a high-performance Class AB design created for listeners who demand absolute control, transparency and authority from their system. Delivering 200 watts per channel at 8Ω in stereo configuration, it offers effortless drive and dynamic precision across an exceptionally wide frequency response of 1Hz to 100kHz (±1dB).

With total harmonic distortion below 0.01% across the full audible spectrum, the PA-1175 MkII ensures clean, accurate reproduction even at high output levels. Its refined architecture is carefully tuned to work seamlessly with a broad variety of loudspeakers, from sensitive monitors to power-hungry floorstanders. This amplifier represents a perfect balance between raw power, musical refinement and technical sophistication.

Optical BIAS: Precision Power with Minimal Distortion

At the heart of the PA-1175 MkII lies Gold Note’s proprietary Optical BIAS system, a sophisticated technology that ensures precise control of the reference voltage with exceptional stability. Unlike conventional bias circuits, Optical BIAS analyses signals separately from the audio path, maintaining absolute purity while continuously optimising performance.

This approach guarantees high output power combined with remarkably low distortion and enhanced loudspeaker protection. The result is a presentation that remains composed, detailed and controlled even during complex musical passages. With a signal-to-noise ratio of 110dB and a slew rate of 20V/µs, the amplifier reacts instantly to dynamic changes, preserving transient speed and micro-detail for an engaging and lifelike listening experience.

Bridge-Tied-Load Power for Ultimate Authority

For systems requiring even greater authority, the PA-1175 MkII features advanced BTL (Bridge-Tied-Load) technology. In this configuration, the stereo amplifier can be bridged into mono mode, dramatically increasing output from 200W at 8Ω per channel to a commanding 520W at 8Ω. This substantial power reserve allows the amplifier to drive even the most demanding loudspeakers with confidence and headroom to spare.

Whether powering large multi-driver floorstanders or speakers with challenging impedance curves, the bridged configuration delivers enhanced channel separation, increased dynamic scale and greater control over low frequencies. This flexibility ensures that the PA-1175 MkII can evolve with your system as performance expectations grow.

Selectable Damping Factor for Perfect Loudspeaker Matching

A distinctive feature of the Gold Note PA-1175 MkII Power Amplifier is its selectable damping factor, adjustable directly from the front panel. Users can choose between a high damping factor of 250 for maximum grip and precision, or a lower setting of 25 for a more relaxed and fluid presentation.

The 250DF setting is ideal for large, low-sensitivity loudspeakers that require strong current delivery and tight bass control. Conversely, the 25DF option suits high-efficiency speakers or compact monitors that benefit from a gentler electrical interaction. This rare capability allows precise system tuning, ensuring optimal synergy between amplifier and loudspeaker for any listening environment.

Advanced Power Supply and Mechanical Isolation

The PA-1175 MkII is built around a substantial 640VA toroidal transformer with a spiral core design. This refined mechanical construction stabilises the core structure, effectively eliminating unwanted vibrations and ensuring consistent electrical performance. A dedicated secondary transformer handles auxiliary functions separately, preserving the integrity of the main audio signal path.

The amplifier’s robust aluminium chassis, crafted from thick panels in signature Gold Note style, minimises RFI and EMI interference, shielding the internal circuitry from environmental noise. With maximum power consumption rated at 1200W and an efficient idle draw of just 1.2W, the design combines muscular capability with thoughtful engineering and operational stability.

Connectivity and System Integration

The Gold Note PA-1175 MkII Power Amplifier offers both balanced XLR and unbalanced RCA inputs, ensuring compatibility with a wide range of preamplifiers and source components. Input sensitivity is rated at 1V for RCA and 4V for XLR, with a 47kΩ input impedance providing stable integration within high-end systems.

Gold-plated binding posts ensure secure and low-resistance speaker connections for optimal signal transfer. Designed for uncompromising performance in reference-level systems, the PA-1175 MkII combines raw power, refined control and advanced technology into a single, meticulously engineered chassis. It is an amplifier built not only to meet expectations, but to exceed them in every aspect of musical reproduction.