4C amorphous iron core 10H0.3A 30H0.2A 7H0.5A single-ended push-pull tube amplifier with inductive choke C-type iron core
USD 46.41
4C amorphous iron core 10H0.3A 30H0.2A 7H0.5A single-ended push-pull tube amplifier with inductive choke C-type iron core