The P-4600 is a stereo power amplifier by Accuphase that delivers 150 watts x 2 channels into 8 ohms, 300 watts x 2 into 4 ohms and 450 watts x 2 into 2 ohms. It was released in 2020. It is a 2-channel design using a Class A/B output stage. Bridged to mono it delivers bridged mono, which is the usual way to use a pair of these on a demanding speaker. Speakers connect via binding posts. A minimum impedance of 2 ohms makes it compatible with a wide range of loudspeakers. The Accuphase P-4600 has an MSRP of $13,975.
Performance Specs
One of the most important factors when deciding on an integrated amplifier is its power ratings and compatibility with your speaker's impedance requirements. The Accuphase P-4600 is rated at 150 watts RMS into 8-ohms.
Here are the main highlights of its performance specs:
- 150 watts into 8-ohms
- 300 watts into 4-ohms
How loud will 150 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
Which speakers suit the Accuphase P-4600?
150 W into 8 ohms, 300 W into 4, rated down to 2 ohms.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
Need more power?
Accuphase P-4600 is rated at 150 watts into 8 ohms, which puts it in our 121 to 180 watts band. The next band up is Over 180 watts, which is worth about 2.3dB more output. That is a real difference in headroom on peaks, and a modest one in how loud the system plays - power and loudness are not the same thing.
Before buying watts, check what your speakers actually need: the amp and speaker matcher works it out from their sensitivity, impedance and your room. Plenty of systems are better served by the 91 to 120 watts band and better speakers.
When pairing the Accuphase P-4600 with a passive Bookshelf (Stand mount) or Passive Floor Standing (Tower) speaker, you have to check if their Max Power Range is below the max wattage of the amp for the given impedance levels.
Operating your amp outside of this max range may damage the speakers.
What size of room is the Accuphase P-4600 Amplifier good for?
An essential deciding factor is the size of the room in which you intend to employ the Accuphase P-4600 amplifier. Here, taking into account its maximum power parameters, we analyzed its applicability to various size environments:
| Listening Environment |
Suitability |
| Near-field | Poor |
| Small Room | Poor |
| Mid-size Room | Good |
| Large Room | Good |
| Very Large Room | Average |
Inputs and Outputs
Besides the performance specs of the Accuphase P-4600, the next important feature set that you have to evaluate is the input and output selections that it offers.
Accuphase P-4600 has total of 2 Analog inputs .
Inputs
- Total Number of Analog Inputs: 2
Outputs
Bluetooth Connectivity
Accuphase P-4600 doesn't have bluetooth connectivity feature. In order to stream your music via bluetooth, the easiest way is to connect an external bluetooth receiver to your Accuphase P-4600. Two bluetooth receivers that we recommend are the
iFi Zen Blue V2 and the
Audioengine B1.
Among the amps in the same price range, these are the 2 amps that have Bluetooth Connectivity:
Phono Input
Accuphase P-4600 doesn't have a phono input so in order to play your vinyl albums, Accuphase P-4600 has to be paired with a Phono Preamp that is MM (Moving Magnet) or/and MC (Moving COil) depending on your cartridge type.
Balanced connections
Accuphase P-4600 has a balanced XLR input. A balanced cable carries the signal twice, on two conductors of opposite polarity. Interference picked up along the way lands on both equally and cancels when the two are recombined at the far end, so the longer the cable run and the noisier the surroundings, the more the connection is worth. Whether a balanced connection also yields more power depends on how the amplifier is built inside - some are balanced end to end, others convert to single-ended internally and deliver the same power either way, so it is worth reading the maker's own wording rather than assuming.
Accuphase P-4600 Pros and Cons
Drawn from the published figures on this page, not from listening.
- ✓Power nearly doubles into a harder load, 150 watts into 8 ohms rising to 300 into 4, which points to a power supply with real current in reserve.
- ✓150 watts per channel into 8 ohms is more than most rooms and most speakers will ever ask for.
- ✓Rated down to 2 ohms, so even a speaker with a punishing impedance dip is within its brief.
- ✓Damping factor of 800 means a low output impedance and firm control over a woofer.
- ✓Can be bridged to mono, so a pair can be used as two larger monoblocks.
- ✓Balanced XLR inputs, worth having on a long cable run.
- ✓Has VU meters.
- ✓Made in Japan.
- ✗A power amplifier has no volume control and no input selection - it needs a preamplifier, or a source with a variable output, in front of it.
Accuphase P-4600 External Dimensions and Weight
Accuphase P-4600 has external dimensions of (H x W x D) .
- Width: mm (")
- Height: mm (")
- Depth: mm (")
- Weight: —
- Base Surface Area: ~cm2 / 0.0inch2
- Volume: ~0.0 liter / 0.0 gallon
Available colors
Accuphase P-4600 is available in Champagne Gold color options.
| General |
| Brand |
Accuphase |
| Full Model Name |
Accuphase P-4600 |
| Release Date |
2020 |
| Amplifier Type |
Power Amplifier |
| Number of Channels |
2 |
| Amp Class |
Class A/B |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
150 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
300 watts |
| Bridged Power per Channel |
Yes, bridged mono |
| Frequency Bandwidth |
|
| Damping Factor |
800 |
| THD |
|
| Minimum Impedance |
2 |
| Signal to Noise Ratio |
N/A |
| Digital Music |
| Built-in DAC |
No |
| Bluetooth |
No |
| WiFi |
No |
| CONNECTIONS |
| Total Analog Inputs |
2 |
| Phono Input |
No |
| Headphone Output |
No |
| Removable Power Cord |
|
| Speaker Connectors |
Binding posts |
| PHYSICAL SPECS |
| Height |
mm (") |
| Width |
mm (") |
| Depth |
mm (") |
| Weight |
— |
| Available Colors |
Champagne Gold |
| OTHER |
| Parts Warranty |
|
| Labor Warranty |
|
How much power does the Accuphase P-4600 have?
The Accuphase P-4600 delivers 150 watts x 2 channels into 8 ohms, 300 watts x 2 into 4 ohms and 450 watts x 2 into 2 ohms. Its output almost doubles into 4 ohms, which points to a strong power supply that can hold its composure with demanding, low-impedance speakers.
Does the Accuphase P-4600 use vacuum tubes?
No. The Accuphase P-4600 is a solid-state amplifier - there are no vacuum tubes in it.
What amplifier class is the Accuphase P-4600?
The Accuphase P-4600 uses a Class A/B amplifier design. Class A/B is the traditional linear design: it runs warmer and is less efficient than Class D, but it is long valued for its natural, low-distortion sound.
Does the Accuphase P-4600 have a built-in DAC?
No. The Accuphase P-4600 has no built-in DAC, so a digital source such as a streamer or CD transport needs its own converter, or you connect it over analogue.
Can I connect a turntable to the Accuphase P-4600?
No. The Accuphase P-4600 has no phono input, so a turntable needs an external phono preamp (or a deck with one built in) before it can be connected.
Does the Accuphase P-4600 have Bluetooth?
No. The Accuphase P-4600 does not have Bluetooth built in; you would need an external Bluetooth receiver connected to one of its inputs.
Does the Accuphase P-4600 have a headphone output?
No. The Accuphase P-4600 does not have a headphone output, so headphone listening needs a separate headphone amplifier.
How much does the Accuphase P-4600 cost?
The Accuphase P-4600 has a manufacturer's list price (MSRP) of $13,975.
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