J74+K170+A970+C2240 Tone plates (Marantz circuit) Preamp mixer board Pre-amplifier board for HIFI am
<div><p style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 15.0px;line-height: inherit;font-family: arial ， helvetica ， sans-serif;vertical-align: baseline;color: #000000;"> <span style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 16.0px;line-height: inherit;vertical-align: baseline;">1. Use J74 K170 A970 C2240 transistor and other senior fever<br> PCB size: 125X68MM<br> Voltage: AC12V-0-AC12V or AC15V-0-AC15V (15W)</span></p><p style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 15.0px;line-height: inherit;font-family: arial ， helvetica ， sans-serif;vertical-align: baseline;color: #000000;"> <span style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 18.0px;line-height: inherit;vertical-align: baseline;">Output zero resistor</span></p><p style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-size: 15.0px;line-height: inherit;font-family: arial ， helvetica ， sans-serif;vertical-align: baseline;color: #000000;"> <span style="box-sizing: content-box;margin: 0.0px;padding: 0.0px;border: 0.0px;font-style: inherit;font-weight: inherit;font-size: 18.0px;line-height: inherit;vertical-align: baseline;"><img alt="1 - - - - - - - - - - - - - - - - - - - - - - - - (2) -" src="http://sc01.alicdn.com/kf/HTB1LRPTgYYI8KJjy0Faq6zAiVXal.jpg"><img alt="1 - - - - - - - - - - - - - - - - - - - - - - - - (2)" src="http://sc01.alicdn.com/kf/HTB1g16Ig0nJ8KJjSszdq6yxuFXaA.jpg"><img alt="1 - - - - - - - - - - - - - - - - - - - - - - - - (3)" src="http://sc01.alicdn.com/kf/HTB1MCffg_nI8KJjSszbq6z4KFXao.jpg"><img alt="1 - - - - - - - - - - - - - - - - - - - - - - - -" src="http://sc02.alicdn.com/kf/HTB1tO_kg22H8KJjy0Fcq6yDlFXae.jpg"><img alt="1 - - - - - - - - - - - - - - - - - - - - - - - (2) -" src="http://sc02.alicdn.com/kf/HTB1lxqxbPgy_uJjSZPxq6ynNpXaR.jpg"></span></p></div>