KONG XIAO MENG from Passive Preamplifier 600： Audio Signal Boosting Transformer

The song KONG XIAO MENG from a Passive Preamplifier 600：, that is a gain-adjustable passive preamplifier (audio signal boosting transformer). Using British original authentic 600: boosting transformers (second-hand disassembled one) 148H, 8DB amplification, the maximum magnification time is 2.4 times, oscilloscope test bandwidth 20-20KHz; And the music source from iPad’ s HIFI music player with 16bits, the speaker is an IWISTAO 4 full range bamboo enclosure. Passive Preamplifier (600：):