Westend Audio SystemsLeo [€10'000] is a modern 300B integrated amplifier developed by AVM's transistor expert to produce 20wpc/4Ω in class A single-ended non-parallel mode without feedback. ECC81 triodes whose halves wire in parallel are the drivers which like the power triodes mount military-style inside the chassis. Small capacitor-coupled toroidal output transformers, a toroidal mains transformer, SMPS-powered heaters, electronic hum suppression, 4 high-level inputs plus MM/MC phono plus Bluetooth are further details.