Short answer: the JBL Authentics 200 is the proven choice, measured and ranked among powered desktop speakers, while the newer Marshall Stanmore IV has no independent measurements yet and can only be compared on specs.
The case for the Marshall Stanmore IV: A 5 inch woofer on a 60W amplifier and two 0.75 inch tweeters on 25W each, now with waveguides and a redesigned bass port, and Marshall rates it down to 36Hz.
On the JBL Authentics 200 side: Wi-Fi streaming with simultaneous Alexa and Google Assistant support, rare at this size.
On paper: The Marshall Stanmore IV is rated down to 36Hz against 50Hz, though makers quote these at different tolerances.
Price: the Marshall Stanmore IV lists at $429.99 and the JBL Authentics 200 at $380.
Buy the JBL Authentics 200 if you want a speaker whose sound quality has been measured and ranked. It also has Wi-Fi streaming.
Buy the Marshall Stanmore IV if you want deeper rated bass and RCA inputs, and you can wait for measurements to confirm how it sounds.
Want more options? Browse the full Powered Home rankings.
Specifications Side By Side
| Marshall Stanmore IV | JBL Authentics 200 | |
|---|---|---|
| Price | $429.99 | $380 each |
| Ranked | - | #8 of 19 in Medium Size Powered Desktop Speakers |
| AES Input | No | No |
| Amplifier Power | 110W (woofer 60W, tweeters 2x 25W) | 90W |
| App | Yes (Marshall) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | No Battery |
| Bluetooth | Yes, 5.3 | Yes, 5.3 |
| Bluetooth Codecs | SBC, AAC, LDAC, LC3 | SBC |
| Bluetooth Version | 5.3 | 5.3 |
| Built-in Microphone | No | - |
| Cabinet Color | black, cream | - |
| Coaxial Input | No | No |
| Dimensions | 203H x 350W x 185D mm | 10.5” x 6.8” x 6.6” (266.3 x 171.7 x 167.4 mm) |
| Drivers | 1x 5” woofer + 2x 0.75” tweeters with waveguides | 5” full-range woofer, 2x 25mm tweeters; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator |
| EQ | Yes (bass/treble knobs, app EQ, room calibration) | Yes |
| Frequency Response | 36Hz - 38kHz (Manufacturer specified) | 50Hz - 20kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No | No |
| IP Rating | None | None |
| Inputs | Bluetooth, RCA, 3.5mm aux | Bluetooth, Wifi, Aux, USB (US only) |
| Maximum SPL | 97dB at 1m (Manufacturer specified) | - |
| Optical Input | No | No |
| Party Mode | Yes (Auracast) | Yes (Wi-Fi multi-room) |
| Power Bank | No | - |
| Power Input | AC Power cord | AC Power Cable (100-240V) |
| RCA Input | Yes | No |
| Stereo | Partially (1 woofer) | Partially (1 woofer) |
| TRS Input | No | No |
| TWS | No | No |
| USB Input | No | Yes |
| Weight | 3.99 kg | 9.3 lbs (4.2 kg) |
| Wi-Fi | No | Yes (IEEE 802.11 a/b/g/n/ac/ax (2.4GHz/5GHz)) |
| Woofer Cabinet | ported | ported |
| XLR Input | No | No |
| Bass Extension (-10dB) | - | ~50Hz |
| Streaming Services | - | AirPlay, Chromecast, Spotify Connect, Alexa MRM |
| Voice Assistants | - | Amazon Alexa & Google Assistant (simultaneous) |
Prices on this page were last checked September 29, 2026 at 3:43 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Marshall Stanmore IV: $429.99 Amazon eBay
Older models: the Marshall Stanmore III (rated 3.8/5) and the Marshall Stanmore II (rated 3.7/5).
Pros: A 5 inch woofer on a 60W amplifier and two 0.75 inch tweeters on 25W each, now with waveguides and a redesigned bass port, and Marshall rates it down to 36Hz. Bluetooth 5.3 with SBC, AAC, LDAC and LC3, multipoint, Auracast for linking more speakers, and both 3.5 mm aux and RCA inputs for a turntable. The Marshall app adds EQ and room calibration, and the new M-button jumps to a saved EQ or Spotify Tap.
Cons: No independent measurements or side by side comparisons against speakers we rank have been published yet, so it can’t be ranked. One woofer serves both channels, so its stereo is limited to the tweeters. It needs mains power, with no battery, and it has no Wi-Fi streaming and no microphone for voice control.
Full Marshall Stanmore IV review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 110W (woofer 60W, tweeters 2x 25W) |
| App | Yes (Marshall) |
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth | Yes, 5.3 |
| Bluetooth Codecs | SBC, AAC, LDAC, LC3 |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Cabinet Color | black, cream |
| Coaxial Input | No |
| Dimensions | 203H x 350W x 185D mm |
| Drivers | 1x 5” woofer + 2x 0.75” tweeters with waveguides |
| EQ | Yes (bass/treble knobs, app EQ, room calibration) |
| Frequency Response | 36Hz - 38kHz (Manufacturer specified) |
| HDMI Input | No |
| IP Rating | None |
| Inputs | Bluetooth, RCA, 3.5mm aux |
| Maximum SPL | 97dB at 1m (Manufacturer specified) |
| Optical Input | No |
| Party Mode | Yes (Auracast) |
| Power Bank | No |
| Power Input | AC Power cord |
| RCA Input | Yes |
| Stereo | Partially (1 woofer) |
| TRS Input | No |
| TWS | No |
| USB Input | No |
| Weight | 3.99 kg |
| Wi-Fi | No |
| Woofer Cabinet | ported |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
JBL Authentics 200: $380 each Amazon eBay
Pros: Wi-Fi streaming with simultaneous Alexa and Google Assistant support, rare at this size. Well balanced sound that reviewers rate close to the pricier Authentics 300. Measured about 113dB at 1kHz on max volume, matching the bigger 300 despite the smaller cabinet. Measured bass extension of ~50Hz (-10dB).
Cons: Bass not as deep as others. No TWS. No IP rating. Not as loud as others. Not much battery life.
Full JBL Authentics 200 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 90W |
| App | Yes |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~50Hz |
| Battery Life | No Battery |
| Bluetooth | Yes, 5.3 |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Coaxial Input | No |
| Dimensions | 10.5” x 6.8” x 6.6” (266.3 x 171.7 x 167.4 mm) |
| Drivers | 5” full-range woofer, 2x 25mm tweeters; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator; 6-inch down-firing passive radiator |
| EQ | Yes |
| Frequency Response | 50Hz - 20kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| IP Rating | None |
| Inputs | Bluetooth, Wifi, Aux, USB (US only) |
| Optical Input | No |
| Party Mode | Yes (Wi-Fi multi-room) |
| Power Input | AC Power Cable (100-240V) |
| RCA Input | No |
| Stereo | Partially (1 woofer) |
| Streaming Services | AirPlay, Chromecast, Spotify Connect, Alexa MRM |
| TRS Input | No |
| TWS | No |
| USB Input | Yes |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) |
| Weight | 9.3 lbs (4.2 kg) |
| Wi-Fi | Yes (IEEE 802.11 a/b/g/n/ac/ax (2.4GHz/5GHz)) |
| Woofer Cabinet | ported |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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