Short answer: the Ascend Sierra 1 v2 for the higher ranking, the Moondrop M4P MTM for the lower price. The Ascend Sierra 1 v2 ranks #2 of 21 bookshelf speakers at $1000. The Moondrop M4P MTM ranks #4 at $920, $80 cheaper.
On the Ascend Sierra 1 v2 side: Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer. Set against that: F3 of 55Hz and F10 of 39Hz mean in-room extension tops out in the mid-40s Hz.
The case for the Moondrop M4P MTM: MTM (mid-tweeter-mid) two-way layout with dual 4” carbon-cone woofers flanking a 1” aluminum-magnesium dome tweeter, crossed over at 1.8kHz. The tradeoff: Vertical placement is very fussy: staying within about ±20° of the tweeter axis is essential.
Buy the Ascend Sierra 1 v2 if the ranking matters more than the price. Buy the Moondrop M4P MTM if the price matters more than the ranking.
Specifications Side By Side
| Ascend Sierra 1 v2 | Moondrop M4P MTM | |
|---|---|---|
| Price | $1000 | $920 |
| Ranked | #2 of 21 in Medium Size Bookshelf Speakers | #4 of 21 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz | - |
| Bass Extension (-3dB) | 55Hz | 60Hz |
| Dimensions | 14.25"H x 7.5"W x 10.5"D (361.9 x 190.5 x 266.7 mm) | 14.96"H x 6.10"W x 7.28"D (380 x 155 x 185 mm) |
| Impedance | 8 ohms | 4 ohms |
| Sensitivity | 82dB | 85dB |
| Drivers | 5.25" proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) | 2x 4" (87mm) carbon cone woofer, 1" (25mm) aluminum/magnesium dome tweeter |
| Weight | 18.5 lbs / 8.4 kg each | 13.7 lbs / 6.2 kg each |
| Woofer Cabinet | Ported | - |
| Crossover Frequency | - | 1800Hz |
| Power Handling | - | 75W rated / 150W max |
The Two Speakers In Full
Ascend Sierra 1 v2: $1000 Ascendacoustics
Pros: Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design. In-room response is extremely linear - the reviewer called it “textbook” - a clear step up from the earlier V1, which had boxiness around 700Hz-1kHz and sibilance around 4-6kHz. Preference score of 8.4 with a subwoofer (6.8 without), which the reviewer calls topnotch. Wide, even horizontal radiation of about ±70° up to 6kHz. Better vertical directivity than its tweeter-to-woofer spacing would suggest, thanks to the steep 4th-order crossover slopes. No mechanical noise, port chuffing, or woofer bottoming even driven to 96dB/1m. In a three-way comparison against the Dynaudio Emit 20 and a Revel bookshelf model (all around $1,000/pair), measured as the most linear of the three and was the reviewer’s personal pick over both, despite the Dynaudio’s deeper bass and higher output capability. Independent ASR Klippel measurements corroborate Erin’s findings: superb off-axis response with only slight on-axis variations, and an in-room response the reviewer called “incredibly smooth and accurate - amazing for a non-DSP speaker.” Distortion above 200Hz at 86dB/1m is very low for the class.
Cons: F3 of 55Hz and F10 of 39Hz mean in-room extension tops out in the mid-40s Hz; the reviewer still recommends a subwoofer for full-range material. Diffraction dips appear around 3kHz and 5-6kHz, and the 1” dome tweeter starts beaming above roughly 6.7kHz, narrowing the soundstage radiation in the top octave - a straightforward consequence of dome size rather than a design flaw. At 96dB/1m the 5.25” midwoofer shows increased distortion in the midrange, likely tied to motor topology; high-passing to a subwoofer around 80Hz largely clears it up. Moderate sensitivity (~81-82dB average) with a 7-ohm minimum impedance. ASR’s power-sweep testing found response holds steady up to 96dB SPL/1m, but pushing to 102dB causes midbass below 400Hz to sag with distortion “through the roof” - a harder output ceiling than the 96dB tests alone suggest. Vertical directivity also narrows above about 1kHz, so the reviewer recommends staying at tweeter-axis height for best results.
| Bass Extension (-10dB) | 39Hz |
|---|---|
| Bass Extension (-3dB) | 55Hz |
| Dimensions | 14.25"H x 7.5"W x 10.5"D (361.9 x 190.5 x 266.7 mm) |
| Drivers | 5.25" proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) |
| Impedance | 8 ohms |
| Sensitivity | 82dB |
| Weight | 18.5 lbs / 8.4 kg each |
| Woofer Cabinet | Ported |
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: NEW! Ascend Acoustics Sierra-1 V2 Review
- Erin’s Audio Corner Website Ascend Sierra 1 v2
- Audio Science Review Ascend Sierra 1 v2
- Erin’s Audio Corner: 5 AWESOME SPEAKERS Under $1000 You Won’t Regret
- Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- Head-to-Head Comparisons
- Links
Moondrop M4P MTM: $920 Shenzhenaudio
Pros: MTM (mid-tweeter-mid) two-way layout with dual 4” carbon-cone woofers flanking a 1” aluminum-magnesium dome tweeter, crossed over at 1.8kHz. Wide horizontal radiation of about ±60° through the midrange and still around ±50° near the tweeter, giving an expansive, enveloping soundstage on well-recorded stereo material. Noticeable mid-bass “thump” around 100-160Hz that adds a sense of punch and kick-drum impact, more pronounced than the reviewer’s Audiofirst Fidelia reference. Rolled-off, laid-back treble (roughly 1-2dB below linear) rather than the 2-5dB high-frequency boost common on speakers marketed as “detailed” - a plus for listeners who find brighter speakers fatiguing. Tonal balance stays consistent whether pointed straight on or toed out about 30°, so side-to-side seating position doesn’t change the sound much. At $920/pair in a compact monitor cabinet (13-14 lbs), reasonably priced for the format.
Cons: Vertical placement is very fussy: staying within about ±20° of the tweeter axis is essential, because the two woofers cancel each other through the crossover region (classic MTM lobing) - sit above or below that window and the upper midrange loses clarity and detail. SPL-limited: noticeable compression showed up both subjectively (thinner-sounding transients at 80-85dB/10 feet) and in measurements, with roughly 1.5dB of dynamic-range loss and about 3dB of added distortion under instantaneous compression testing. Harmonic distortion jumps substantially at 96dB versus 86dB (mostly second-order, so less audible than it looks on paper), and multitone distortion rides right at the reviewer’s 3% threshold at full output. Low impedance (3.7-ohm minimum, 1.7-ohm minimum EPDR) means a Class AB amp may run hot over longer sessions; a Class D amp is recommended for better thermal headroom. Designed primarily for nearfield use (about 1 meter); farfield listening is more of a gamble since dynamic range drops off noticeably at distance. Slight sibilance and a mild upper-midrange dip give a touch of a recessed, warm character alongside the bass emphasis. Bass reaches only about 50-60Hz in-room, and not with much volume before running into the SPL limits noted above.
| Bass Extension (-3dB) | 60Hz |
|---|---|
| Crossover Frequency | 1800Hz |
| Dimensions | 14.96"H x 6.10"W x 7.28"D (380 x 155 x 185 mm) |
| Drivers | 2x 4" (87mm) carbon cone woofer, 1" (25mm) aluminum/magnesium dome tweeter |
| Impedance | 4 ohms |
| Power Handling | 75W rated / 150W max |
| Sensitivity | 85dB |
| Weight | 13.7 lbs / 6.2 kg each |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.