Benchmark USA HPA4
Best reference amplifier for audiophiles seeking absolute sonic transparency and precision.
This is the gold standard for those who demand absolute transparency and zero coloration in their signal chain. By prioritizing clinical precision and raw power, it sacrifices warmth for an uncompromising, fatigue-free window into your music that few other amplifiers can match.
$3499.00
at
Benchmark Media Systems
Who it's for
- Audiophiles demanding absolute sonic purity and transparency
- Listeners requiring precise volume matching at low levels
- System builders needing a versatile preamp and headphone amp
Who should skip it
- Budget-conscious listeners seeking entry-level audio gear
- Design enthusiasts preferring elegant or ornate home aesthetics
- Users wanting an all-in-one digital streaming solution
Performance breakdown
Signal Transparency
THX-888 technology virtually eliminates noise and distortion for pure audio reproduction.
Drive Capability
High-voltage output effortlessly powers even the most demanding high-impedance headphones.
Volume Precision
Relay-controlled gain offers 256 granular steps for perfect, channel-matched listening levels.
System Versatility
Comprehensive balanced and unbalanced I/O options integrate seamlessly into any setup.
Build Quality
Expertly designed and tested in the USA for long-term professional reliability.
Interface Intuition
Touchscreen and rotary encoder provide a modern, tactile control experience.
Key Specs
THX-888™ Headphone Output
THD < -125 dB (0.00006%)
SNR > 131 dB, unweighted, 20-20 kHz
SNR > 135 dB, A-weighted
Frequency Response
-0.003 dB at 10 Hz, -0.001 dB at 20 kHz
Bandwidth exceeds 0.1 Hz to 500 kHz
Output Impedance
near 0 Ohms
Maximum Output Power
6 Watts into 16 Ohms
Maximum Output Voltage
11.5 Vrms into 300 Ohms
Balanced Line Outputs
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