The SRM-1/MK2 drive unit supplies the necessary polarizing voltage for the phones and is also a low-powered class-A transistor amplifier that can simultaneously drive two sets of Pros or other Stax headphones. The SR-Lambda is available in two versions, the more costly being the Pro. Althoug...
The SRM-Xh direct-drive amp (Stax calls it the Driver Unit) is the smallest, simplest such unit furnished with any of the Lambda 'phones. In fact, it seems that the price difference between the Pro Classic and the next-model-up SR-Lambda Pro 3 is accounted for in its larger, more c...
" as well as a Stax ED-1 diffuse-field equalizer. The Lambdas were driven by their SRM-1/Mk.II direct-drive, class-A, solid-state amplifier, using aMeridian 208CD player as source. As well as using each pair of headphones for my daily music supply, I did some paired comparisons, ma...
The SRM-717 is deceptively heavy. And even though it's solid-state, it runs fairly hot. The front panel is simple: a four-element dual-gang volume control to the right, a positive-action power On/Off switch, and a pair of five-pin Earspeaker outputs below, carrying Pro Only polarizing...