The PMG S400 is a Stereo Power Amplifier by PS Audio that delivers First 10W per channel in Class A. Damping factor over 240 at 8 ohms.. It was released in 2026. It is a 2-channel design using a Class A/AB output stage. Speakers connect via Binding Post. PS Audio PMG S400 has an MSRP of 9999$.
There are 10 PS Audio amplifiers in our database. Below you can see the main specs of these amps.
PS Audio Power Amplifier Series
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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 PS Audio PMG S400 is rated at 200 watts RMS into 8-ohms. PS Audio provides this wattage at a THD (Total Harmonic Distortion) of under 0.002% typical, 20Hz to 20kHz at 1W into 8 ohms which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 200 watts into 8-ohms at under 0.002% typical, 20Hz to 20kHz at 1W into 8 ohms
- 400 watts into 4-ohms
How loud will 200 watts actually play in your room? →
Which speakers suit the PS Audio PMG S400?
200 W into 8 ohms, 400 W into 4.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
When pairing the PS Audio PMG S400 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 PS Audio PMG S400 Amplifier good for?
An essential deciding factor is the size of the room in which you intend to employ the PS Audio PMG S400 amplifier. Here, taking into account its maximum power parameters, we analyzed its applicability to various size environments:
| Listening Environment |
Suitability |
| Near-field | Are you nuts? |
| Small Room | Bad |
| Mid-size Room | Poor |
| Large Room | Good |
| Very Large Room | Good |
Inputs and Outputs
Besides the performance specs of the PS Audio PMG S400, the next important feature set that you have to evaluate is the input and output selections that it offers.
PS Audio PMG S400 has total of 1 Analog inputs .
Inputs
- Total Number of Analog Inputs: 1
Outputs
Bluetooth Connectivity
PS Audio PMG S400 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 PS Audio PMG S400. 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 5 amps that have Bluetooth Connectivity:
Phono Input
PS Audio PMG S400 doesn't have a phono input so in order to play your vinyl albums, PS Audio PMG S400 has to be paired with a Phono Preamp that is MM (Moving Magnet) or/and MC (Moving COil) depending on your cartridge type.
PS Audio PMG S400 External Dimensions and Weight
PS Audio PMG S400 has external dimensions of (H x W x D) 8.00 x 17.50 x 16.00 inch (203.2 x 444.5 x 406.4 mm ). The unit weighs
25.9 kg (57.1 lbs).
Base Surface Area
Base surface area of an integrated amplifier may become an important decision factor when the space in your room or desk is limited.
The base area of the PS Audio PMG S400 is approximately 1806.4cm2 / 280.0inch2.
- Width: 444.5mm (17.50")
- Height: 203.2mm (8.00")
- Depth: 406.4mm (16.00")
- Weight: 25.9 kg (57.1 lbs)
- Base Surface Area: ~1806.4cm2 / 280.0inch2
- Volume: ~36.7 liter / 9.7 gallon
Available colors
PS Audio PMG S400 is available in Black and Silver color options.
Official Product Page
Official manufacturer's product page for the PS Audio PMG S400 Integrated Amplifier can be found below:
Official Product Page for PS Audio PMG S400
Warranty
3 Years of parts warranty and 3 Years of labor warranty is generally provided for the PS Audio PMG S400 by the manufacturer.
| General |
| Brand |
PS Audio |
| Full Model Name |
PS Audio PMG S400 |
| Release Date |
2026 |
| Amplifier Type |
Power Amplifier |
| Number of Channels |
2 |
| Amp Class |
Class A/AB |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
200 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
400 watts |
| Frequency Bandwidth |
|
| THD |
under 0.002% typical, 20Hz to 20kHz at 1W into 8 ohms |
| Minimum Impedance |
|
| Signal to Noise Ratio |
N/A |
| Digital Music |
| Built-in DAC |
No |
| Bluetooth |
No |
| WiFi |
No |
| CONNECTIONS |
| Total Analog Inputs |
1 |
| Phono Input |
No |
| Headphone Output |
No |
| Removable Power Cord |
IEC |
| Speaker Connectors |
Binding Post |
| PHYSICAL SPECS |
| Height |
203.2mm (8.00") |
| Width |
444.5mm (17.50") |
| Depth |
406.4mm (16.00") |
| Weight |
25.9 kg (57.1 lbs) |
| Available Colors |
Black, Silver |
| OTHER |
| Parts Warranty |
3 Years |
| Labor Warranty |
3 Years |
How much power does the PS Audio PMG S400 have?
The PS Audio PMG S400 delivers First 10W per channel in Class A. Damping factor over 240 at 8 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 PS Audio PMG S400 use vacuum tubes?
No. The PS Audio PMG S400 is a solid-state amplifier - there are no vacuum tubes in it.
What amplifier class is the PS Audio PMG S400?
The PS Audio PMG S400 uses a Class A/AB 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 PS Audio PMG S400 have a built-in DAC?
No. The PS Audio PMG S400 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 PS Audio PMG S400?
No. The PS Audio PMG S400 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 PS Audio PMG S400 have Bluetooth?
No. The PS Audio PMG S400 does not have Bluetooth built in; you would need an external Bluetooth receiver connected to one of its inputs.
Does the PS Audio PMG S400 have a headphone output?
No. The PS Audio PMG S400 does not have a headphone output, so headphone listening needs a separate headphone amplifier.
How much does the PS Audio PMG S400 cost?
The PS Audio PMG S400 has a manufacturer's list price (MSRP) of $9,999.
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