February 28th. Checking with Ferrum boss Marcin Hamerla, "we must postpone launch to the end of March. The main reason are last-minute firmware changes. That's very complex and though our R&D team did a great job, some final issues need polishing. At HEM we aren't the biggest fans of overtime so need more time. We also decided to write more subtitles across more languages for our YouTube productions. Those take time, too. Once Wandla launches, please visit our YT channel. I think you will find our videos quite informative. For now, two photos of first production." Eagle eyes spy heart-shaped silkscreen where the Serce module plugs into its two headers. Obviously firmware can load well past physical production. Ferrum could build up a welly of Wandla inventory then inject its operational IQ once they'd signed off on final code.
By mid March, Ferrum's FaceBook pages teased video production on Wandla's official reveal.
On March 24th we got this teaser intro video [click next image to launch].
A few days later…
… the website followed up with formal photos. The rear panel offers USB C, coaxial S/PDF, AES/EBU, i²S and ARC on HDMI plus Toslink digital inputs, one set of RCA analog inputs automatically converted to balanced upon entry; and RCA/XLR analog outputs. The touch screen opens a multi-layer menu with extra functionality like three digital filters from Sabre and two from HQ Player (more to be accessible post launch), volume type/bypass. The 4-pin 22-30V/2.5A power socket—two pins for power, two for voltage feedback—anticipates the upgrade from stock switching power adapter to Hypsos.
Wandla's max output voltage is 9.5Vrms balanced, 4.75Vrms unbalanced. The volume control can be analog, digital or bypass. Bandwidth is 10Hz-200kHz ±0.1dB for a fast truly balanced circuit. Output impedance is 22/44Ω RCA/XLR, THD+N -115dB, A-weighted dynamic range 127dB. MQA is auto-sensing. Wandla measures 21.7×20.6x5cm WxDxH and weighs 1.8kg.