Hi, I'm looking for a small tube output transformer to match low-Z headphones to a BC-221. Rough specs: Pri 4k - 10k Ohms, single ended or push-pull Sec 4, 8, or 16 Ohms. Pwr <5 Watts Can be new or used pull. Minimum lead length 1". Something from an All American Five would do fine. Please email off-list. Thanks --John =================