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Monitor Audio Platinum 300 3G

Name: Monitor Audio Platinum 300 3G
Brand: Monitor Audio
SKU: ranges-platinum-series-3g-platinum-300-3g
Price: 11500.00 GBP
Availability: InStock
Rating: 4.7 (14 reviews)

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The Platinum 300 3G’s combination of MPD III transducer, 4” RDT III mid-range driver, and two 8” RDT III bass drivers allows it to deliver exceptional scale and depth. The worthy flagship of the Platinum Series 3G, this loudspeaker is quite simply the best in its class.

Objects of Desire.

The Platinum 300 3G, the flagship of the Platinum Series, represents the absolute pinnacle of what is achievable at its price-point in terms of both performance and design. The combination of the innovative new MPD III transducer and the RDT III mid-range and bass driver cones, allows the speaker to deliver exceptional scale and depth. With a totally immersive soundstage and believably lifelike performance, 300 3G’s presentation of music and film is astonishing. The Platinum 300 3G’s expertly crafted design and innovative acoustic system performance, ensures that it will remain relevant for a lifetime.

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Overall Score 94/100

Deliciously Crispy

Boasting an almost frightening command of pace and scale, the Platinum 300 3G delivers deep, textured bass, remarkable midrange detail and an expansive, focused soundstage that makes complex mixes feel effortless — points noted by hi-fi+ and Sound Advice. Luxurious build and refined MPD/RDT drivers complete a confident, high‑end presentation.

hi-fi+

"they're so casually, effortlessly and unarguably in command of each and every situation that 'enjoyment' almost becomes 'gratitude'."

Sound Advice

"the sort of effortlessness they embody, the utterly unarguable authority they demonstrate, the sort of instinctive correctness that's more readily associated with statements like '2+2=4'."

Audiophilepure

"This speaker is commendably uncolored."

Pros

Powerful, deep and well‑textured low end with claimed in‑room extension to around 17Hz and robust power handling.
Exceptional midrange clarity and vocal presence — natural, uncoloured and highly detailed across complex material.
Spacious, tightly focused soundstage with controlled directivity that places instruments and voices precisely.
Premium build and finish — heavily braced, multi‑layer lacquered cabinets and refined driver engineering reflect high‑end construction.

Cons

Top end can exhibit a slight sibilance with some solid‑state amplifiers, making amp pairing important for ultimate smoothness.
Requires substantial room space and robust partnering electronics (200–800W recommended) to reach its full potential.

Sound Quality

94/100

Bass

96/100

Dual 8" woofers, ported alignment with 32Hz tuning and claimed in-room -6dB to 17Hz. Reviews repeatedly praise deep, textured, authoritative low end and ability to breathe and deliver sub-bass extension; described as 'deep, extensively detailed and textured' and 'deep-breathing power-handling.'

Mid

95/100

Multiple reviewers highlight exceptional midrange fidelity and vocal presence ('torrentially', 'remarkable midrange fidelity'). Midrange is described as natural, uncoloured and highly articulate across complex material.

Treble

91/100

MPD III tweeter and refined waveguide yield precise, detailed top end ('bites and shines', cymbal strikes distinct). One reviewer noted occasional sibilance with certain solid-state amps, so slight caution on top-end brightness with some electronics.

Soundstage Imaging

94/100

Reviewed as spacious, focused and tightly layered with controlled directivity; reviewers cite confident instrument positioning and convincing depth and width ('spacious, and so focused', 'positioning...is so assured').

Dynamics

94/100

Consistently praised for headroom and rhythmic drive ('dynamic potency is still unarguable', 'dynamic headroom is considerable'). Handles both punchy and delicate passages with control and authority.

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Build Quality

95/100

Massive, heavily braced cabinets with 16-layer lacquer, thick baffles and RDT III drivers. Reviewers emphasise premium cabinet engineering and finish, and substantial per-speaker weight (53.6kg) reflecting solid construction.

Features Connectivity

80/100

Passive tower baseline applied. Includes adjustable spiked outriggers and rear-firing port; nominal 4Ω/88dB rating and suggested heavy amplification, but no DSP/app features (not penalised).

Value for Money

85/100

At ~£11,500/US$11,500 pair reviewers call them a serious financial commitment requiring matching electronics and space, but also note performance justifies cost for those who can support them.