Siegmund Guitars & Amplifiers’ Sound King 300B is a Class A guitar amp with 25 watts output using 300B output tubes and 6SL7/6SN7 preamp tubes. Its circuit has true-bypass reverb, EQ bypass, Mercury Magnetics transformers, low-impedance effects loop, Spraque TVA filters, Vitamin Q paper/oil tone caps, Allen Bradley carbon-comp resistors, and cloth wiring. Each is hand-made to order with a variety of tolex and grill combinations or with oil-varnished wood. All have an illuminated/laser-engraved control panel. Visit siegmundguitars.com.