The Little Dot I+ is a hybrid transistor-vacuum tube headphone amplifier, which combines the smooth, musical sound of tubes with the high output current of transistors. The vacuum tube stage is run in Class-A, the MC33078 operational amplifier (socketed) provides voltage amplification, and BD139/BD140 transistors serve as output buffers. The Little Dot I+ is specifically designed and optimized for driving low impedance headphones that require high current to perform to their full potential. Depending on how the switches are configured, three different families of vacuum tubes can be used (EF95, EF92, and 408A). With two gain settings and DIP switches for vacuum tube rolling, the Little Dot I+ offers versatility in a tiny footprint!
Little Dot MK IV
Boasting a SEPP (OTL) in Class-A circuit design filled with high quality components such as an...
Little Dot MK VI+
A fully balanced architecture, the Little Dot MK VI+ has exceptional dynamic range and can produce...
Little Dot VII+
The Little Dot MK VII+ is a fully balanced, dual-mono headphone amplifier with single-ended...
Little Dot MK II
An SEPP (single-ended push pull) OTL circuit operating in Class-A, the Little Dot MK II greatly...
Little Dot MK I+
The successor to the Little Dot MK I, the Little Dot MK I+ takes advantage of American National...