Interstage transformers are a key building block in many high-end valve (tube) amplifier designs. Placed between driver and output stages, they provide phase splitting, impedance matching, and voltage gain while adding the characteristic tonal depth that transformer coupling is known for. This collection brings together a range of interstage transformers suited for DIY builders, amplifier upgrades, and custom hi-fi or guitar amp projects. Whether you’re working on a single-ended triode design, a push-pull amplifier, or exploring transformer-coupled driver stages, these interstage transformers offer the performance, bandwidth, and musicality that define great valve and tube amplification.
