The STR Power Amplifier is a stereo power amplifier by Anthem that delivers 400 watts x 2. It was released in September 2017. It is a 2-channel design using a Class A/B output stage. Speakers connect via binding posts. A minimum impedance of 2 ohms makes it compatible with a wide range of loudspeakers. The Anthem STR Power Amplifier has an MSRP of $6,500.
There are 2 Anthem amplifiers in our database. Below you can see the main specs of these amps.
Anthem 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 Anthem STR Power Amplifier is rated at 400 watts RMS into 8-ohms. Anthem provides this wattage at a THD (Total Harmonic Distortion) of 0.004% which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 400 watts into 8-ohms at 0.004%
- 600 watts into 4-ohms
How loud will 400 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
Which speakers suit the Anthem STR Power Amplifier?
400 W into 8 ohms, 600 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?
Anthem STR Power Amplifier is rated at 400 watts into 8 ohms, which puts it in our Over 180 watts band. That is the top band we cover, so there is no step up from here - if it is not enough, the answer is more sensitive speakers or a smaller room, not more watts.
When pairing the Anthem STR Power Amplifier 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.
Inputs and Outputs
Besides the performance specs of the Anthem STR Power Amplifier, the next important feature set that you have to evaluate is the input and output selections that it offers.
Anthem STR Power Amplifier has total of 2 Analog inputs .
Inputs
- Total Number of Analog Inputs: 2
Outputs
Anthem STR Power Amplifier Pros and Cons
Drawn from the published figures on this page, not from listening.
- ✓400 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.
- ✓Distortion is specified at 0.004%, an order of magnitude below what is generally held to be audible.
- ✓5-year parts warranty, longer than most of the market.
- ✓Detachable mains lead (IEC 2-prong).
- ✗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.
Anthem STR Power Amplifier External Dimensions and Weight
Anthem STR Power Amplifier has external dimensions of (H x W x D) . The unit weighs
27.22 kg (60 lbs).
- Width: mm (17")
- Height: mm (6-3/4")
- Depth: mm (18-1/2")
- Weight: 27.22 kg (60 lbs)
- Base Surface Area: ~cm2 / 0.0inch2
- Volume: ~0.0 liter / 0.0 gallon
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided for the Anthem STR Power Amplifier by the manufacturer.
| General |
| Brand |
Anthem |
| Full Model Name |
Anthem STR Power Amplifier |
| Release Date |
September 2017 |
| 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 |
400 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
600 watts |
| Frequency Bandwidth |
|
| THD |
0.004% |
| Minimum Impedance |
2 |
| Signal to Noise Ratio |
N/A |
| CONNECTIONS |
| Total Analog Inputs |
2 |
| Removable Power Cord |
IEC 2-prong |
| Speaker Connectors |
Binding posts |
| Speaker Outputs |
2 |
| Level Controls |
No |
| PHYSICAL SPECS |
| Height |
mm (6-3/4") |
| Width |
mm (17") |
| Depth |
mm (18-1/2") |
| Weight |
27.22 kg (60 lbs) |
| OTHER |
| Parts Warranty |
5 Years |
| THX Certification |
No |
| Labor Warranty |
5 Years |
How much power does the Anthem STR Power Amplifier have?
The Anthem STR Power Amplifier delivers 400 watts x 2. It increases its output into 4 ohms, so it has some headroom for harder-to-drive speakers.
Does the Anthem STR Power Amplifier use vacuum tubes?
No. The Anthem STR Power Amplifier is a solid-state amplifier - there are no vacuum tubes in it.
What amplifier class is the Anthem STR Power Amplifier?
The Anthem STR Power Amplifier 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.
How much does the Anthem STR Power Amplifier cost?
The Anthem STR Power Amplifier has a manufacturer's list price (MSRP) of $6,500.
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