Monitor Audio Platinum 100 3G Bookshelf Speakers - Pair Finish:Piano Black Gloss The surface quality is critical

The surface quality is critical because a conductor can be considered as a rail-guide for both the electric fields within a conductor

The Vecta connection system is built into the bracket and speaker

Intermodulation Distortion < 0

Tracking Error Angle Within 2° 32'　(at the outer groove of 30cm(12") record)

Monitor Audio Platinum 100 3G Bookshelf Speakers - Pair Finish:Piano Black Gloss The surface quality is criticalPlatinum 100 3G bookshelf speakers deliver a refined detailed sound from a compact design, perfect to fit into any dcor. It features a MPD III transducer and 6 RDT III mid bass driver cone. 1 x MPD III high frequency transducer for a larger, clearer, and more lifelike sound 1 x 6 RDT III mod bass drivers for exceptional scale and depth Sensitivity (2. 83 Vrms @ 1m, Free Field) 85 dB Continuous Power Handling (RMS into 4 Ohms, Pink Noise with 6dB Crest