There is no batch, the mics are available on order with fast international shipping.
SOUND SAMPLES (raw files from Zoom F6 recorder and Tascam DR100mkIII)
EarSight nano microphones are manufactured by Immersive Soundscapes in France, in small quantities. Each model is checked before shipping. It’s also possible to offer you adapted cable lenghts to suit your needs, do not hesitate to contact me for any specific request. email@example.com