20K: 600Ω single-ended output transformer, dual C amorphous iron core balanced output transformer, direct current: 50mA
SPECIFICATIONS
Brand Name: NONE
Certification: NONE
Coil Number: Autotransformer
High-concerned chemical: none
Origin: Mainland China
Phase: SINGLE
Use: AUDIO
is_customized: Yes
Double C nickel-based amorphous C-type output transformer 20K: 600 ohms: for ECC88, 12AU7, 6N8P, 6N9P, 6N1 and other electronic tubes in parallel to promote the output. It is used for transformer output circuit, which can directly drive the rear stage or earphone.
The iron core is an imported nickel-based amorphous C-type iron core, a second-hand iron core, the iron core is very thin and extremely brittle. If you accidentally install the iron core, it will pierce your hand.
The C-type amorphous iron core is a high-end electronic tube-end output transformer iron core, which is very brittle and cannot be beaten with force. The core is also very thin, similar to natural insulating mica ore, which can be stripped layer by layer.
Selecting imported second-hand amorphous alloy sheets to wind the output transformer is the secret and basis for good results. The coiled output transformer has high and elegant high frequency, sweet intermediate frequency, stable low frequency, and has a better charm than many high-priced silicon steel chips, making the sound soft and durable, and the high and low frequency extension is wider, giving full play to the unique musical characteristics of the tube.
The use of imported second-hand amorphous alloy materials to wind, reasonable design, and complex process winding methods are the secrets and guarantees for the good effect of this transformer. The transformer is wound by 2C amorphous iron core and wire-wrapped skeleton epoxy board material. 8 clip 6 winding method, vacuum dipping and CNC drying, no counter-offer! The price-performance ratio is my responsibility, and the effect is welcome to compare.
Input 20K two lines, output 600Ω three lines, single-ended or balanced input is possible.
Measured parameters: The data will be different due to different measuring instruments.
Primary inductance: about 70H, DC resistance about 542 ohms
Secondary inductance: about 2.3H, DC resistance about 50 ohms
Leakage inductance: about 23mH
Distributed capacitance: 1360PF
Direct current: 50mA secondary current 400mA
Frequency response: 5Hz-23KHz -0.5B, 27KHZ-1DB
Volume: 90mmX65mmX75mm
Weight: about 1.66 kg/pair.
The entire frequency band of the transformer is very balanced, low frequency is strong, intermediate frequency density is high, high frequency is transparent and delicate.




- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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