Alpha 20 Line stage amplifiers
AMB laboratories' Alpha 20 amplifiers are low noise, high input impedance, low output impedance audio line stage amplifiers. These kits feature Elna Silmic II and Wima MKS caps, along with matched Toshiba 2SK170/ 2SJ74 JFETs. The output transistors are MJE 243/253. The kit comes with a set of six, different gain resistors to allow the builder more choices when configuring the voltage gain. The Alpha 20 are capable of gains between 1 to 20x (0dB to 26dB). Please ask if you have a specific preference of gain, we can fill that need. Kit comes with parts for 1 board.
- Item #: Alpha_20