Accuphase · P Series
$13,975
Accuphase · P Series
The P-4600 is Accuphase's 150-watt Class AB stereo power amplifier: 300 watts into 4 ohms and 450 into 2, a damping factor of 800 and a 125 dB signal-to-noise ratio, with the big illuminated power meters.
Price is for one unit.
Authorized Accuphase dealer · Delivery and installation by Pearl Audio · Trade-ins welcome
The story
The P-4600 is the amplifier most Accuphase separates systems start with. Each channel uses six parallel push-pull power transistors in a three-stage Darlington configuration, driven in Class AB and arranged as an instrumentation amplifier with balanced inputs. Accuphase's MCS+ circuit runs the voltage amplification stage in parallel to lower the noise floor, current-feedback topology keeps the high-frequency phase stable, and balanced remote sensing feeds the speaker-terminal ground back to the amplifier for a guaranteed damping factor of 800. A toroidal transformer and 50,000 µF of filter capacitance sit behind it.
Output switching and protection use MOS-FET switches with no mechanical contacts, and a four-position gain selector (max, −3, −6 and −12 dB) matches the amplifier to any preamplifier. It supports bi-amping and a bridged mono mode for when a system grows, and the logarithmic power meters read down to −50 dB with switchable illumination. With a C-2300 in front of it, the P-4600 is a complete Accuphase separates system at about the price of the E-800S integrated.
Accuphase builds every component in a single finish, so there is nothing to choose. The champagne-gold front panel has been the house signature since 1972. The top plate is hairline-finished aluminum.
| Type | Stereo power amplifier, Class AB |
| Rated output (20 Hz–20 kHz, both channels) | 150 W/ch into 8 Ω; 300 W/ch into 4 Ω; 450 W/ch into 2 Ω |
| Bridged mono | Supported (bridge mode) |
| Output stage | Six parallel push-pull power transistors per channel, three-stage Darlington, instrumentation-amplifier configuration |
| Damping factor | 800 (guaranteed) |
| Signal-to-noise ratio | 125 dB (A-weighted, input shorted); output noise 19.5 µV |
| Gain | Selector: max, −3, −6, −12 dB |
| Inputs | 1 balanced (XLR, 40 kΩ), 1 line (RCA, 20 kΩ) |
| Power supply | Toroidal transformer; 50,000 µF filter capacitors |
| Power consumption | 94 W idle |
| Dimensions (W × H × D) | 18.3 × 7.5 × 16.8 in (465 × 190 × 427 mm) |
| Weight | 66 lb (30.0 kg) |
| Sold as | Single unit |
The entry to Accuphase power amplifiers. The P-7500 doubles the power; the A-80 and A-300 are pure Class A.
Pair it with the C-2300 preamplifier. Two P-4600s in bridged mode make a monaural pair with about four times the output.
Plan your Accuphase system with Pearl Audio
Pearl Audio is an authorized Accuphase dealer in Portland, Oregon. We can help with system matching, delivery and setup, and arrange a listening appointment. Call (503) 222-2599 or email sales@pearlaudio.com.
The Pearl Audio experience
A system at this level should be heard, thoughtfully matched, and properly set up. From the first audition to long-term ownership, you work with the same people, in person.
Hear the P-4600 Power Amplifier by appointment in one of our two purpose-designed demonstration rooms, with your own music and time to compare without pressure.
We deliver and install throughout the Portland area, taking care of placement, connections, ventilation and system configuration ourselves.
We support everything we sell for as long as you own it, whether the answer comes by phone, in your home, or through factory service.
Trade-in assistance and qualifying 100% Trade-Up options give you flexibility when your listening priorities or your system change.
