The Stellar S300 is a stereo power amplifier by PS Audio that delivers Damping factor over 1100 at 8 ohms.. It was released in 2017. It is a 2-channel design using a Class D output stage. Speakers connect via binding posts. The PS Audio Stellar S300 has an MSRP of $1,999.
There are 10 PS Audio amplifiers in our database. Below you can see the main specs of these amps.
PS Audio Power Amplifier Series
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 Stellar S300 is rated at 140 watts RMS into 8-ohms. PS Audio provides this wattage at a THD (Total Harmonic Distortion) of under 0.02% at 1kHz, 1W into 4 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:
- 140 watts into 8-ohms at under 0.02% at 1kHz, 1W into 4 ohms
- 300 watts into 4-ohms
- 100dB Signal to Noise Ratio
How loud will 140 watts actually play in your room? →
Which speakers suit the PS Audio Stellar S300?
140 W into 8 ohms, 300 W into 4.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
Need more power?
PS Audio Stellar S300 is rated at 140 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 PS Audio Stellar S300 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 Stellar S300 Amplifier good for?
An essential deciding factor is the size of the room in which you intend to employ the PS Audio Stellar S300 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 PS Audio Stellar S300, the next important feature set that you have to evaluate is the input and output selections that it offers.
PS Audio Stellar S300 has total of 1 Analog inputs .
Inputs
- Total Number of Analog Inputs: 1
Outputs
Bluetooth Connectivity
PS Audio Stellar S300 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 Stellar S300. 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 Stellar S300 doesn't have a phono input so in order to play your vinyl albums, PS Audio Stellar S300 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
PS Audio Stellar S300 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.
PS Audio Stellar S300 Pros and Cons
Drawn from the published figures on this page, not from listening.
- ✓Power nearly doubles into a harder load, 140 watts into 8 ohms rising to 300 into 4, which points to a power supply with real current in reserve.
- ✓Class D output stage, so it runs cool and wastes little power as heat - which is how it fits in a small case.
- ✓Signal-to-noise ratio of 100dB, so the amplifier itself should be inaudible between tracks.
- ✓Balanced XLR inputs, worth having on a long cable run.
- ✓Detachable mains lead (IEC).
- ✗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.
PS Audio Stellar S300 External Dimensions and Weight
PS Audio Stellar S300 has external dimensions of (H x W x D) 3.00 x 17.00 x 12.00 inch (76.2 x 431.8 x 304.8 mm ). The unit weighs
5.9 kg (13 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 Stellar S300 is approximately 1316.1cm2 / 204.0inch2.
- Width: 431.8mm (17.00")
- Height: 76.2mm (3.00")
- Depth: 304.8mm (12.00")
- Weight: 5.9 kg (13 lbs)
- Base Surface Area: ~1316.1cm2 / 204.0inch2
- Volume: ~10.0 liter / 2.6 gallon
Available colors
PS Audio Stellar S300 is available in Black and Silver color options.
Official Product Page
Official manufacturer's product page for the PS Audio Stellar S300 Integrated Amplifier can be found below:
Official Product Page for PS Audio Stellar S300
Warranty
3 Years of parts warranty and 3 Years of labor warranty is generally provided for the PS Audio Stellar S300 by the manufacturer.
| General |
| Brand |
PS Audio |
| Full Model Name |
PS Audio Stellar S300 |
| Release Date |
2017 |
| Amplifier Type |
Power Amplifier |
| Number of Channels |
2 |
| Amp Class |
Class D |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
140 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
300 watts |
| Frequency Bandwidth |
|
| THD |
under 0.02% at 1kHz, 1W into 4 ohms |
| Minimum Impedance |
|
| Signal to Noise Ratio |
100 dB |
| 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 posts |
| PHYSICAL SPECS |
| Height |
76.2mm (3.00") |
| Width |
431.8mm (17.00") |
| Depth |
304.8mm (12.00") |
| Weight |
5.9 kg (13 lbs) |
| Available Colors |
Black, Silver |
| OTHER |
| Parts Warranty |
3 Years |
| Labor Warranty |
3 Years |
How much power does the PS Audio Stellar S300 have?
The PS Audio Stellar S300 delivers Damping factor over 1100 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 Stellar S300 use vacuum tubes?
No. The PS Audio Stellar S300 is a solid-state amplifier - there are no vacuum tubes in it.
What amplifier class is the PS Audio Stellar S300?
The PS Audio Stellar S300 uses a Class D amplifier design. Class D is a modern switching design that runs cool and wastes very little energy as heat, which is how makers fit high power into a compact, light chassis.
Does the PS Audio Stellar S300 have a built-in DAC?
No. The PS Audio Stellar S300 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 Stellar S300?
No. The PS Audio Stellar S300 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 Stellar S300 have Bluetooth?
No. The PS Audio Stellar S300 does not have Bluetooth built in; you would need an external Bluetooth receiver connected to one of its inputs.
Does the PS Audio Stellar S300 have a headphone output?
No. The PS Audio Stellar S300 does not have a headphone output, so headphone listening needs a separate headphone amplifier.
How much does the PS Audio Stellar S300 cost?
The PS Audio Stellar S300 has a manufacturer's list price (MSRP) of $1,999.
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