繼 Krank Rev Jr (Std/PRO) 和 Krankenstein Jr 後, Krank Amplification 推出新的 Junior 系列 - Nineteen80 Jr 和其他 Junior 一樣是 2 channels, 一樣用 5881 power tubes http://www.krankamps.com/products <iframe title="YouTube video player" width="640" height="390" src="http://www.youtube.com/embed/6pxBT303V9c" frameborder="0" allowfullscreen></iframe>
來自 Krank Tech 的回覆 : The Jr Series amps are a cathode bias arrangement. It is not adjustable. The only tubes we recommend for use with these amps would be the Sovtek 5881/6L6WGC (current manufacture Tung-Sol 5881 will also work) and any NOS 5881 type (shorter bottle), or you can also use 6V6's (ONLY in the 20 watt versions, NO 6V6 in the 50 watters). No full size base 6L6 types. No EL34's. Since these amps are a cathode bias configuration, they are self biasing. No bias adjustment can be made with this type circuit. Patrick Krank Amplification