Dating vacuum tube
No, not the white stuff..dandy little OTL headphone amp DIY kit.
I wanted it for my measurement program, which was slow in coming, so it took a while to get around to building it.
There are two schemes that were adopted, one used in Europe for valves primarily manufactured and used there, and the other for vacuum tubes from the USA.
Although the numbering schemes were different, most valves or tubes were available with numbers in both systems.
Consonance probably intended for this EL34 based tube integrated to be used in a dedicated listening room driving some high-efficiency speakers. Thanks to its relatively compact size and built-in headphone amp, it works perfectly for desktop audio too, which is why it fits here at Inner Fidelity.
Example: the Stax SRS-4170 system is comprised of the SR-407 headphones and the SRM-006t S amplifier.Since 1999 they have been in the business of making tube-based audio gear, chiefly amplifiers and preamps but also CD players and even tube-friendly speakers.I examine their HP8 MKII headphone amplifier to see what Icon is all about.When the Aurium showed up here, I didn't have any idea what to expect sonically, but I expected and got a nice looking product.
Icon Audio is a self-professed "small company" based Leicester UK.
In the rare case of an output tube failure, the small tubes in front of it will turn red to notify you of the problem.