Accuphase P-4600 Power Amplifier

Name: Accuphase P-4600 Power Amplifier
Brand: Accuphase
Availability: OutOfStock

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Envelops you in pure music listening

The Accuphase P-4600 Power Amplifier is a high-end stereo power amplifier designed for the most discerning listener. It boasts a robust build quality, cutting-edge technology, and exceptional sonic performance, and is a true centerpiece for any high-fidelity sound system.

The P-4600 delivers a robust 150 watts per channel into 8 ohms, doubling to 300 watts into 4 ohms. This ample power ensures it can drive demanding speakers with ease, faithfully reproducing even the most dynamic musical passages.

Availability

Specifications

Continuous Average Output Power: Stereo operation - 500 watts per channel into 1 ohm, 360 watts per channel into 2 ohms, 180 watts per channel into 4 ohms, 90 watts per channel into 8 ohms. Monophonic operation (bridged connection) - 1000 watts into 2 ohms, 720 watts into 4 ohms, 360 watts into 8 ohms.

Total Harmonic Distortion: Stereo operation - 0.05% with 2 ohm load, 0.02% with 4 to 16 ohm load. Monophonic operation (bridged connection) - 0.05% with 4 to 16 ohm load

Intermodulation Distortion: 0.01%

Frequency Response: At rated output: 20 – 20,000 Hz +0, -0.2 dB. At 1 watt output: 0.5 – 160,000 Hz +0, -3.0 dB

Gain: 28.0 dB (with GAIN selector at MAX) (Stereo and monophonic operation)

Gain Selection: MAX, -3 dB, -6 dB, -12 dB

Output Load impedance: Stereo operation - 2 to 16 ohms. Monophonic operation: 4 to 16 ohms

Damping Factor: 800 or greater

Input Sensitivity: Stereo operation - 1.38 V for rated continuous average output. 0.11 V for 1 watt output. Monophonic operation - 2.76 V for rated continuous average output. 0.11 V for 1 watt output

Input Impedance: Balanced - 40 kilohms. Line - 20 kilohms

Signal-to-Noise Ratio (A-weighted, input shorted): 125 dB (GAIN selector at MAX), 130 dB (GAIN selector at -12 dB) At rated continuous average output

Output Level Meters: －∞ dB to +3 dB (indication in dB and %) Logarithmic scale, with defeat switch, hold time switchable 3 s / ∞

Power Requirements: AC 120 V/230 V, 50/60 Hz (Voltage as indicated on rear panel)

Power Consumption: 94 watts idle. 485 watts in accordance with IEC 60065

Maximum Dimensions: Width 465 mm, Height 190 mm, Depth 427 mm

Mass: 30 kg net, 36.0 kg in shipping carton

Groundbreaking technology

The Accuphase P4600 power amplifier utilises a sophisticated Class AB design that combines the best of both Class A and Class B amplification for a perfect balance of power, efficiency, and sound quality.

Accuphase employs top-of-the-line components throughout the P-4600, including custom-wound transformers, high-grade capacitors, and meticulously selected transistors. This attention to detail results in exceptional audio clarity and accuracy.

Power amplification section with linear output characteristics

The power amplification stage of the P-4500 features bipolar power transistors mounted directly to large heat sinks for highly efficient thermal dissipation. The devices are configured as a triple Darlington 4-parallel complementary push-pull circuit that is capable of doubling the rated output when the impedance is halved. In other words, it achieves a fully linear power progression of 90 watts into 8 ohms, 180 watts into 4 ohms, and 360 watts into 2 ohms. It can even supply loads as low as 1 ohm with 500 watts of power (music signals). The impressive damping factor of 700 means that the amplifier has ample leeway to drive any kind of loudspeaker.

Who is this for?

The Accuphase P-4600 is designed for serious HiFi enthusiasts building a high-quality separates system who want strong control, refinement, and musicality without moving into pure Class-A or ultra-flagship power amplification. It suits listeners who already have a capable preamplifier and are looking to drive high-performance loudspeakers with confidence and authority.

This amplifier is particularly well suited to medium to large listening rooms, where its combination of power, grip, and low noise performance can fully support dynamic music reproduction. It works especially well with revealing floorstanding speakers that benefit from solid current delivery and stable control, helping music remain composed even during demanding passages.

The P-4600 is ideal for listeners who value long-term reliability and a smooth, non-fatiguing presentation. Its Class-AB design offers an excellent balance of efficiency, power, and refinement, making it a strong choice for those who want high-end performance that remains practical for everyday listening.

For customers stepping up from integrated amplification or upgrading within an Accuphase separates system, the P-4600 represents a highly capable foundation power amplifier—delivering authority, precision, and musical ease in equal measure.