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 $199.95.
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.
About the ratings: the Marshall Stanmore IV’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 3.6 to 4.0, so this verdict could change once it is measured.
Want more options? Browse the full Powered Home rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Marshall Stanmore IV | JBL Authentics 200 | |
|---|---|---|
| Price | $429.99 each | $199.95 each |
| Ranked | #8 of 29 in Medium Size Powered Desktop Speakers Estimated | #10 of 29 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 | Yes |
| 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 | 8”H x 13.8”W x 7.3”D (203 x 350 x 185 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 | 8.8 lbs (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) |
Where the Ratings Come From
- Marshall Stanmore IV: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- JBL Authentics 200: reviews by Jay’s Straight Up Reviews & More and Danny Pops.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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