Martin Logan B2 speakers (Walnut) with WiiM AMP Ultra top3 CD Compatibility: CD / CD-R/RW

CD Compatibility: CD / CD-R/RW / WMA / MP3

1 x SPDIF in Optical

Microphone pick-up pattern

Independently tested to 13

BT in to Line out：

Martin Logan B2 speakers (Walnut) with WiiM AMP Ultra top3 CD Compatibility: CD / CD-R/RWPairing the MartinLogan Motion Foundation B2 bookshelf speakers with the WiiM Amp Ultra makes for an outstanding, high performance compact audio system. This combination delivers excellent power, high resolution streaming, and room filling sound at an accessible price. Why They Work Well Together Power & Control: The B2s are 5 ohm speakers that handle up to 100 watts. The WiiM Amp Ultra outputs a robust 200W per channel at 4 ohms (or 100W into 8 ohms)