From next-gen desktop amps to a signature bass that celebrates a low-end legend, here are the essential gear launches you might have missed ...

The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi enthusiasts today.

All-fiber orbital angular momentum (OAM) amplifier with high purity and broadband spectrum gain based on a fused taper vortex-beam coupler (VBC) has been studied. Active and passive few-mode fibers ...

In this paper, the semiconductor optical amplifier (SOA) is used with a Michelson interferometer (MI) forming a structure of SOA-MI logic devices with symmetrically identical Fiber Bragg Grating (FBG) ...