Rare, vintage 1950s matched heavy-duty power supply component set manufactured by Union Switch & Signal. This matched trio was carefully removed together from a highly specialized railroad system’s 300V regulated power supply chassis used in railroad control tower operations. This industrial-grade iron is incredibly over-engineered, making it a premium choice for high-end custom tube amplifier builders, audiophile DIY hi-fi projects, or vintage radio restorations. Why this set is ideal for Tube Amp Builders: Continuous Duty Iron: Built to zero-compromise railroad safety standards for 24/7/365 operation without overheating. Vintage Steel Core: 1950s laminations provide excellent magnetic properties and the coveted harmonic compression/”sag” that modern transformers cannot mimic. Ultra-Quiet DC Filtering: The matched L1 and L2 choke coils provide a massive advantage for smoothing out high-voltage ripple, delivering a dead-silent noise floor for sensitive audio circuits. Included in this set:(1). Main Power Transformer: Style HT / Volts: 115 / Cyc: 50/100(2) Matched Filter Choke Coils: L1 and L2 inductors matching the power transformer chassis requirements. All components feature the original, intact Union Switch & Signal identification tags complete with factory serial numbers. Physical Condition: Excellent vintage condition. The iron cores, heavy frames, and original wiring leads are fully intact.

This is a pair of Sansui HS-5 single-ended output transformers from the renowned Sansui brand. They are used but have been tested and are in good working condition. Two Output Transformers (Pair). Please refer to the photos for the included items. Type: Single-Ended Output Transformer (Pair). Dimensions (Each): 62 mm (W) × 62 mm (D) × 78 mm (H). Total Weight (Pair): Approx. Mounting Hole Spacing: 43 mm × 45 mm. Application: Vacuum Tube Amplifiers. Notes: This item has been tested and confirmed to be in good working condition. These are not included in the item price.

We do not mark merchandise values below value or mark items as gifts. Japan, US and International government regulations prohibit such behavior. About Importer’s Obligation. Thank you for your understanding.

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.

TANGO HIRATA FX-40-8 PP Output Transformer Pair 40W 8k KT88 EL34 Vintage Japan. We deliver authentic vintage audio transformers directly from Tokyo, Japan. Item Description & Specifications. Brand: TANGO (Hirata Electric, Japan). Type: Push-Pull (PP) Output Transformer – Pair (2 units). Primary Impedance: 8k? P-P. Secondary Impedance: 4 / 8 / 16? Frequency Response: 4Hz – 50kHz (-1dB). Primary Inductance: 280H min. Max DC Current: 200mA. Power Loss: 0.24dB. Compatible Tubes: KT88, 6550, EL34, 6L6, 300B, 2A3 and other PP tube amplifier applications. Dimensions (each): W83mm × H104mm × D78mm. Weight (each): 2.3 kg. Origin: Made in Japan (Hirata Electric / TANGO vintage production era). Condition Please read the following carefully. No electrical defects noted on either unit. Cosmetics: Used pair with visible cosmetic wear including scratches and scuffs on both units. What’s Included. TANGO FX-40-8 Push-Pull Output Transformer × 2 (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.

Pair Of Triad R-21A Vintage Tube Amplifier Power Transformer #2 Cloth Leads.

INCREDIBLE FIND FROM A CLOSED MUSIC STORE! SOMEONE WILL NEED THIS! HAS SOME COSMETIC STORAGE WEAR AS SHOWN. ALL LEADS TEST CONTINUTITY. ORIGINAL NOS SUNN SCEPTRE GUITAR TUBE AMP TRANSFORMER. NEVER INSTALLED, PROBABLY USED IN OTHER MODELS AS WELL (just check mounting dimensions & tube lineup). MOUNTING FOOTPRINT: -3″ X 3″. HEIGHT – 4 3/4.

FISHER X-202C INTEGRATED AMPLIFIER AUDIO OUTPUT TRANSFORMER PAIR as pictured, they’re pulled, in good condition (tested) The shown soda can is using as relative scaling purpose only.

Audio output transformer products for tube amplifiers are manufactured in Vietnam. Core material is imported from nippon. The wire we use is exported to Europe and America. We use new materials and do not reuse them under any circumstances. The high skills of Vietnamese workers have created products with stable quality measured by the keysight machine system. Recommended for use with 300BSE, EL34SE, 6l6SE… Or bulbs with equivalent impedance and capacity. Inductance at 20Hz: 20 Henry. Total weight 3.2 kg (7 lbs). Bandwidth 20hz – 20khz (-0.7 db). Note : The price for 1 pair as shown in the picture. We ensure careful packaging.

Pulled from a WORKING pair of W3M tube amplifiers, driving 6L6GC pairs in each. Amps (which are not included, nor are the tubes) were gone through and recapped last year. I bought the amps for the tubes, as I needed them. Parting out now the amplifiers (and other items from the lot). 1 One of them was custom mounted to the chassis, as they relocated one of the caps. They bent the tab that mounts the transformer to the chassis. I tried to bend it back, but it is solid. They must have a metal bending tool. You will need to rebend. I tried with a strong set of grips, and while it moves, I just didn’t trust myself. Obviously not an issue that affects performance, just the way it is mounted. If you are handy, or have some experience bending metal, you can certainly get it back. 2 other one had some wax on the underside, and the wires. Likely a bad wax cap over the years melted. You can likely wipe it off… I did, and some came off. Didn’t spend too much time with it though (like literally 10 seconds). Should clean up nice. These are superb, working TO-300 transformers. Pairs are getting super hard to find (as are singles). Very heavy, will be double boxed to ensure they make the transit.