Great sounding tube int amp in the original box and a non-magnetic hex driver to adjust bias. MC-13S is the latest upgraded version of MC-10L. Upgraded tubes: Blue EL34 6CA7T x4, GE 12AU7×2, Sovtek12AX7×2.
It will include the stock AU7/AX7 tubes. MC-13S is considered one of the best class A integrated amplifiers in 2021 by review groups of push / pull amplifier experts in USA and Europe. Works great and is well taken care as my second system. Feature: - MC-13S is the latest upgraded version of MC-10L. The analog VU meter on the front panel is used to monitor the average value of the output levels of the two channels ; - Class A push-pull amplifier to reduce distortion; - Ultra-linear push-pull amplifier provides greater output power; - Use Japanese silicon steel and Output transformer made of high quality enameled wire, providing wide dynamic range at full rated output; - Audio-specific audiophile grade capacitors and high quality metal precision resistors; - Beautiful heavy duty chassis (stainless steel top, steel bottom) and aluminum panels and baffles.