Monitor Audio Silver 100 8G vs Buchardt S400 MK3

Last updated: October 11, 2026

Short answer: the Monitor Audio Silver 100 8G. It ranks #71 of [214 bookshelf speakers](/passive/bookshelf-large/#monitor-audio-silver-100-0 lbs (8 g)) by sound quality, rated 4.1/5, at $2,300; the Buchardt S400 MK3 ranks #78, rated 4.0/5, at $2,300. Close enough in price that the sound-quality gap is the deciding factor.

Monitor Audio Silver 100 8G vs Buchardt S400 MK3

The case for the Monitor Audio Silver 100 8G: The 2026 Silver 100 becomes a three-way: an 8” C-CAM RST III woofer, a 3” C-CAM midrange and a 25mm C-CAM gold dome tweeter in a waveguide, with Silent Flow ports and 33Hz (-6dB) in-room bass. The catch: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured predecessor.

The case for the Buchardt S400 MK3: A ground-up redesign of the S400 with an 18 percent larger cabinet and a 7.5” SB Acoustics Satori Papyrus paper cone woofer, which Buchardt says has 65.5 percent more displacement than the MKII’s 6” driver. The catch: No independent measurements have been published yet.

Buy the Monitor Audio Silver 100 8G. It is rated higher for sound quality than the Buchardt S400 MK3 at the same price, so it is the default pick unless a specific strength of the other one matters more to you.

About the ratings: neither speaker has been measured yet, so both ratings are estimated from measured siblings and predecessors (likely ranges: Monitor Audio Silver 100 8G 3.8 to 4.4; Buchardt S400 MK3 3.8 to 4.2). Treat this verdict as provisional.

Still deciding? The full Passive Home rankings cover every ranked option.

Specifications Side By Side

Monitor Audio Silver 100 8G Buchardt S400 MK3
Price$2,300 per pair$2,300 per pair
Ranked#71 of 214 in Large Size Bookshelf Speakers Estimated#78 of 214 in Large Size Bookshelf Speakers Estimated
Impedance8 ohms nominal (manufacturer specified)4 ohms
Drivers25mm C-CAM gold dome tweeter, 3” C-CAM midrange, 8” C-CAM RST III woofer1” aluminum dome tweeter in waveguide, 7.5” Satori Papyrus paper cone woofer
Frequency Response33Hz -6dB in-room (manufacturer specified)33Hz - 20kHz (in-room, manufacturer specified)
Sensitivity87dB (manufacturer specified)87dB anechoic, 90dB in-room (manufacturer specified)
Woofer Cabinetportedported, rear
Dimensions17.3”H x 9.1”W x 13.9”D (440 x 230 x 354 mm)15.4”H x 7.8”W x 11”D (392 x 198 x 280 mm)
Weight26.7 lbs (12.1 kg) each18.7 lbs (8.5 kg) each
DIY KitNoNo
Crossover Frequency-2.2kHz (first order)

More worthwhile head-to-heads for Monitor Audio Silver 100 8G:

Prices on this page were last checked October 11, 2026 at 4:59 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

Monitor Audio Silver 100 8G: $2,300 per pair Estimated Audio Advisor eBay

Monitor Audio Silver 100 8G ranking card

Older models: the Monitor Audio Silver 100 7G (ranked higher, estimated 4.3/5) and the Monitor Audio Silver 100 6G (ranked lower, rated 3.9/5). See every Monitor Audio Silver generation.

Same family: the Monitor Audio Silver 50 8G (smaller bookshelf, ranked higher, estimated 4.2/5), the Monitor Audio Silver 300 8G (smaller floorstanding, estimated 4.2/5), the Monitor Audio Silver 500 8G (larger floorstanding, estimated 4.2/5) and the Monitor Audio Silver Centre 8G (center, estimated 4/5).

Pros: The 2026 Silver 100 becomes a three-way: an 8” C-CAM RST III woofer, a 3” C-CAM midrange and a 25mm C-CAM gold dome tweeter in a waveguide, with Silent Flow ports and 33Hz (-6dB) in-room bass.

Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured predecessor. It is larger than before, 440mm tall and 12.1kg each.

ReleasedAug 2026 (2 months ago)
DIY KitNo
Dimensions17.3”H x 9.1”W x 13.9”D (440 x 230 x 354 mm)
Drivers25mm C-CAM gold dome tweeter, 3” C-CAM midrange, 8” C-CAM RST III woofer
Frequency Response33Hz -6dB in-room (manufacturer specified)
Impedance8 ohms nominal (manufacturer specified)
Sensitivity87dB (manufacturer specified)
Weight26.7 lbs (12.1 kg) each
Woofer Cabinetported

Buchardt S400 MK3: $2,300 per pair Estimated Buchardt Audio eBay

Buchardt S400 MK3 ranking card

Older models: the Buchardt Audio S400 (ranked higher, rated 4.4/5) and the Buchardt S400 MKII (ranked lower, rated 3.8/5). See every Buchardt S400 generation.

Pros: A ground-up redesign of the S400 with an 18 percent larger cabinet and a 7.5” SB Acoustics Satori Papyrus paper cone woofer, which Buchardt says has 65.5 percent more displacement than the MKII’s 6” driver. A custom 1” aluminum dome tweeter sits in a new waveguide, crossed at 2.2kHz with a first order Jantzen crossover. Buchardt rates in-room bass extension to 33Hz and anechoic sensitivity at 87dB, and includes foam port plugs to trim bass near a wall. Sold direct with free worldwide shipping, duties included, and a 10 year warranty for the first owner.

Cons: No independent measurements have been published yet. The Buchardt S400 MKII measured very well, but the MK3 shares only its binding posts, so that result can’t be carried over and its linearity, directivity and real bass extension are unknown. The 33Hz figure is an in-room number, not an anechoic one. The MKII’s adjustable passive radiator is gone in favor of a rear port that wants at least 5cm from the wall. A 4 ohm load means it needs an amplifier comfortable driving 4 ohms, and it is sold only direct from Buchardt.

ReleasedMar 2026 (7 months ago)
Crossover Frequency2.2kHz (first order)
DIY KitNo
Dimensions15.4”H x 7.8”W x 11”D (392 x 198 x 280 mm)
Drivers1” aluminum dome tweeter in waveguide, 7.5” Satori Papyrus paper cone woofer
Frequency Response33Hz - 20kHz (in-room, manufacturer specified)
Impedance4 ohms
Sensitivity87dB anechoic, 90dB in-room (manufacturer specified)
Weight18.7 lbs (8.5 kg) each
Woofer Cabinetported, rear