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MartinLogan Theos Floorstanding Loudspeakers Selling my beautiful pair of ML in great condition. They offer superb SQ, transparency, detailed yet warm mids, wide sound stage, solid bass. They come with orig AU power adapter to drive its bass. I'd consider them an all-rounder, very capable to render different music ranging from pop, jazz , soft rock and classic ! The music flow is simply wonderul, no harshness or glaring in higher frequency. Recently upgraded my speakers to scratch the itchy after owning the pair of many years, the new ones aren't really justified but I just can't keep them
Compared with buying a new mid-tier tower pair at A$2,599, this Theos listing is fair to slightly strong, not a steal but clearly in the right zone. A new Theos originally sold for A$7,499 at retail, and recent used examples have shown up around A$3,499 and A$2,199, so A$2,599 sits comfortably in the sensible-used range for a known model.
That’s attractive because the Theos is one of MartinLogan’s sweet-spot hybrids: airy electrostatic detail, a big open soundstage, and enough bass support from the dynamic woofer to work without an immediate sub. It’s a genuinely engaging speaker for vocals, jazz, acoustic, and well-recorded rock. At this price, the buy is best when the panels are healthy, the stators are quiet, and the original power supplies/spikes/manuals are included; condition matters more than cosmetics with electrostatics.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
MartinLogan emerged in the late 1970s from Lawrence, Kansas, when Gayle Martin Sanders and Ron Logan Sutherland, sharing a passion for electrostatic loudspeakers, united their engineering and design expertise. The duo, whose middle names inspired the brand, unveiled their breakthrough at the 1983 CES with the Monolith—the world's first practical hybrid electrostatic speaker, blending a curved panel for mids and highs with a dynamic woofer for bass. This American innovation addressed longstanding electrostatic limitations like fragility and poor low-end response, propelling the company from a high-end audio store collaboration to a dedicated manufacturing powerhouse.
The brand specializes in electrostatic and hybrid speakers, from flagship floorstanders like the CLX and Summit X to more accessible Motion Series designs, alongside complementary powered subwoofers and select electronics. Their proprietary thin-film transducers, advanced panel assembly, and room-optimized engineering define a lineup that prioritizes transparency and precision over conventional dynamic drivers, eschewing amplifiers, turntables, DACs, headphones, or cables.
Positioned firmly in the high-end market, MartinLogan commands respect among discerning audiophiles for its unwavering commitment to electrostatic purity, delivering ethereal soundstaging and timbral accuracy that make cabinets vanish. Now part of the PML group alongside Paradigm and Anthem, it blends Kansas heritage with rigorous innovation, appealing to buyers seeking reference-level realism in home audio and theater systems.
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