The SIB15 – Stereo Isolator & Balancer is a new product from Lundahl Transformers, made on demand from our customers. This handy unit provides superior hum and buzz rejection when connecting portable audio sources (smartphones, laptops…) to professional sound systems. The two LL1532 transformers within the SIB15 guarantee a 10 Hz to 50 KHz bandwidth, total galvanic isolation and full unbalanced-to-balanced conversion.