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Premium OPPO HA-1 integrated headphone amplifier, high-resolution DAC and stereo preamplifier. Originally retailing for $1,199, this discontinued audiophile component combines powerful Class A amplification, extensive connectivity and substantial build quality in one versatile unit.

The HA-1 features a fully balanced analog signal path with a discrete Class A headphone amplification stage designed to drive a broad range of high-quality headphones, including demanding planar-magnetic and high-impedance models. Its ESS Sabre32 Reference ES9018 DAC supports high-resolution PCM audio up to 384 kHz/32-bit and native DSD256 through USB.

FEATURES:

• Discrete Class A balanced headphone amplifier

• ESS Sabre32 Reference ES9018 DAC

• High-resolution PCM up to 384 kHz/32-bit

• Native DSD64, DSD128 and DSD256 support

• 4-pin XLR balanced headphone output

• 1/4" single-ended headphone output

• Adjustable Normal and High gain settings

• Fully balanced analog audio signal path

• RCA and XLR analog inputs

• RCA and XLR preamplifier outputs

• USB, optical, coaxial and AES/EBU digital inputs

• Front USB input for compatible Apple devices

• Bluetooth wireless audio with aptX

• Home Theater Bypass capability

• Motorized analog volume control

• Selectable information, spectrum analyzer and VU-meter display modes

• Heavy-duty aluminum construction

• Toroidal linear power supply

CONDITION:

Described by the original owner as barely used and in exceptionally well-kept condition. The unit powers on immediately, and the front display appears bright, clear and even, with no visible lines or display issues. There are a few incredibly minor surface scratches on the top that are difficult to notice unless closely inspecting the unit; they are shown in the photographs for complete transparency.

Power and display operation have been confirmed. Specialized audio inputs, outputs and advanced functions have not been independently tested unless otherwise noted, so no claims are being made beyond the testing described above.

Please review all photographs for the exact cosmetic condition and everything included with the purchase. This listing is for the OPPO HA-1 and any accessories specifically pictured.

A highly regarded all-in-one solution for headphone listening, digital audio conversion and stereo preamplification. OPPO has discontinued the HA-1, and well-preserved examples remain sought after for their balanced Class A design, powerful headphone output, versatile connectivity and premium construction.