The Blackstar St. James 100 Head is a fully tube-driven 100 W guitar head that combines the classic power of tube amplification with modern technology and professional connectivity. Equipped with a selectable power tube configuration (2 x 6L6 and 2 x EL34), it allows the guitarist to adapt their tone from warm and vintage sounds to aggressive and contemporary ones with great versatility.

It offers four switchable channels and up to six selectable voices, with continuous power reduction down to 5% for playing at low volume without losing tube character. Its three-position “Cut” switch makes it easy to control and shape the high frequencies to suit the style or equipment being used.

The front and rear include built-in digital reverb, an effects loop with series or parallel options, and the exclusive CabRig IR-based technology, which offers professional cabinet simulations through USB and XLR outputs, ideal for both recording and live playing without a microphone. It also incorporates an internal reactive load that accurately reproduces the interaction between the head and the speaker, and comes with a 6-way footswitch to control channels, boost, and reverb.

With a modern design, elegant black finish, and a considerably light weight for an amplifier with these features, the St. James 100 Head is a powerful and versatile option for demanding guitarists in rehearsals, live performances, or the studio.