Offered here: Yaqin VK-2100 integrated stereo amplifier. with a CD-Rom with all photos Dimensions: 42 x 12 x 38 cm weight: 13 kg Year of production: 2012 Power measured: 2 x 85 watts / 8 ohms. The amplifier uses a hybrid tube technology which means that the preamp with tubes works and with 2 x 12AU7 and 2 x 12AT7 (4 x 12AX7 is also possible as an alternative). The power amplifier works with the Toshiba transistors: 2 x 2SA943 and 2 x SC5200 In this way, there is enough power available for almost any speaker and it does justice to the sonic sophistication of a tube amplifier. The Yaqin has a simple and robust construction. 4 line inputs, so no phono option. Very beautiful display of voices and acoustic music. I have not opened the amplifier myself, I have borrowed the photos of the interior. All my audio equipment is professionally checked and tested before taking photographs. At this company (in Zuidlaren) a complete test is done by electro-technicians. The devices are always cleaned, repaired and re-adjusted if needed. In this case, the plexiglass window has been replaced for real glass which will not discolour because of the heat and the volume potentiometer has been restored. Very well packed, boxed twice, and shipped worldwide. I will always choose the shipping method most advantageous for the buyer. Collection from Haren, near Groningen, is possible as well.