TANGO Hirata FW-20S Tube Amp Output Transformer Pair 300B 2A3 KT88 Tested Japan. We deliver authentic vacuum tube amplifier output transformers directly from Tokyo, Japan. Renowned TANGO (Hirata Electric Works) vintage output transformers. Suitable for 300B / 2A3 / KT88 class tube amplifiers. Item Description & Specifications. Brand: TANGO (Hirata Electric Works). Quantity: Matched pair (2 units). Country of Origin: Japan. 6.0 kg (pair). Condition Please read the following carefully. Visible wear and scratches from age. What’s Included. TANGO Hirata FW-20S output transformers (2 units / one pair). Please note: only the items shown in the photos are included in this sale. We ensure optimal packaging for safe international transit. Tracking: Full tracking information provided. International Buyers – Please Note. For Buyers Outside the U. Thank you for your understanding.