Benchmark HPA4 and AHB2 Bundle of Pre and Power Amplifier

Electrical Disclaimer Description

Discover the Benchmark HPA4 and AHB2 at Len Wallis Audio in Lane Cove | SH20724

Reference-level preamplifier and power amplifier combination renowned for vanishingly low distortion, exceptional clarity and effortless dynamics in a compact, professional-grade package.

Key Features

• Ultra-Low Distortion: Benchmark’s acclaimed THX-888 headphone amplifier and radical AHB2 power amp topology approach the limits of measurable performance.

• Exceptional Dynamic Range: AHB2 achieves 132 dB dynamic range, making it one of the quietest power amplifiers available.

• Versatile HPA4: Serves as a pristine line-level preamplifier with outstanding headphone output and balanced connectivity.

• Powerful & Efficient: Dual AHB2 amplifiers deliver massive clean power with high efficiency and robust protection.

• Professional Build: Precision engineering with excellent vibration and noise immunity for reference-level listening.

The Benchmark HPA4 and AHB2 Pre/Power Amplifier Bundle is a formidable reference-grade system consisting of one HPA4 preamplifier/headphone amplifier and two AHB2 power amplifiers.

This pre-owned bundle is in great condition, finished in black, and includes manuals, the HPA4 remote control and original packaging.

Designed for the most demanding listeners, this combination delivers unparalleled transparency, speed and control while maintaining Benchmark’s signature neutrality and musical truth. The dual AHB2 configuration provides exceptional power and headroom for even the most challenging speakers.

Technical Specifications

Benchmark HPA4 Preamplifier / Headphone Amplifier

• THX-888 Headphone Output THD: < -125 dB (0.00006%)

• Headphone SNR: >131 dB unweighted, >135 dB A-weighted

• Headphone Output Power: 6 Watts into 16 Ω, 1.5 A peak current

• Balanced Line Output THD: < -125 dB (0.00006%)

• Line Output SNR: >135 dB unweighted, >137 dB A-weighted

• Frequency Response: -0.003 dB at 10 Hz, -0.001 dB at 20 kHz

• Bandwidth: -3 dB exceeds 0.1 Hz to 500 kHz

• Output Noise (Unity Gain): <1.9 μV (line), <2.45 μV (headphone)

• Maximum Output Voltage: 20 Vrms (line), 11.5 Vrms into 300 Ω (headphone)

• Crosstalk: < -133 dB @ 1 kHz

• Dimensions (W×H×D with feet): 220 × 98.5 × 212 mm

• Weight: 3.63 kg

• Power Consumption: 18 W typical, 0.33 W standby

Benchmark AHB2 Power Amplifier (each)

• Continuous Power (Stereo): 100 W into 8 Ω, 190 W into 4 Ω, 240 W into 3 Ω

• Bridged Mono Power: 380 W into 8 Ω, 518 W into 4 Ω

• Dynamic Range: 132 dB A-weighted (stereo), 135 dB (mono)

• THD+N: < -118 dB (<0.00013%) at full rated power

• Output Noise: -103 dBV A-weighted (stereo)

• Frequency Response: Better than 0.1 Hz to 200 kHz (+0/-3 dB)

• Damping Factor: 350 at 20 Hz (8 Ω)

• Maximum Output Current: 29 A peak per channel

• Input Sensitivity: Selectable 9.2 dB, 17 dB or 23 dB gain

• Protection: Fully electronic with distortion, short-circuit, over-current and over-temperature detection

• Dimensions (W×H×D with feet): 280 × 98.5 × 237 mm

• Weight (each): 5.67 kg

• Power Consumption: 20 W idle

WARRANTY INFORMATION (Commercial Seller)

The item represented is being sold by a Commercial Member. This means they have certain legal requirements when selling new and second-hand goods, and must provide a statuatory warranty under Consumer Law applicable to their location. These requirements may differ depending on their region, so discuss these entitlements with the Seller prior to purchase.