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25W, single ended tube output transformer for 3K Ohms to a specified output.
Availability: Product is built to order.
Ship date: 10 to 12 weeks
*
$116.18

Design
Mathematically designed to produce exact plate and screen voltages. These transformers are precision gapped to adjust for unbalanced DC current.

Primary (Input)
The input is designed for a 3K Ohms impedance source.

Secondary (Output)
The output is designed for a specified speaker impedance.

Magnet Wire
All units are wound with the finest virgin copper magnet wire. All windings use heavy insulated wire to provide excellent manufacturing yield, lower customer cost and superior life.

The Core
EDCOR uses the finest M6 line grain oriented steel cores. Each unit is hand stacked to assure at least 92% stack.

The Bobbin
EDCOR's standard bobbin with black finishing tape.

Termination
The terminations are UL1015 20 and 18 ga. lead wire.

Mounting
This unit comes with steel end bells for mounting with the use of four screws. The end bells are powder coated Gentian Blue (RAL 5010) to add to your tube display and overall appearance.

Design
Mathematically designed to produce exact plate and screen voltages. These transformers are precision gapped to adjust for unbalanced DC current.

Primary (Input)
The input is designed for a 3K Ohms impedance source.

Secondary (Output)
The output is designed for a specified speaker impedance.

Magnet Wire
All units are wound with the finest virgin copper magnet wire. All windings use heavy insulated wire to provide excellent manufacturing yield, lower customer cost and superior life.

The Core
EDCOR uses the finest M6 line grain oriented steel cores. Each unit is hand stacked to assure at least 92% stack.

The Bobbin
EDCOR's standard bobbin with black finishing tape.

Termination
The terminations are UL1015 20 and 18 ga. lead wire.

Mounting
This unit comes with steel end bells for mounting with the use of four screws. The end bells are powder coated Gentian Blue (RAL 5010) to add to your tube display and overall appearance.

Products specifications
Wattage 25W
Max. Current 200mA
Primary (input) Impedance 3K Ohms
Primary (input) DCR 70 Ohms
Primary (input) Inductance 41H
Screen/Grid Tap 40%
Secondary (output) Impedance Depends on model.
Secondary (output) DCR <1 Ohm
Frequency Response 20~20K Hz., <1dBu
THD+Noise <0.1% @ 1K Hz.
Bobbin Material Nylon 6/6 GF-30
Flammability Rating Class B 130°C
Core Material M-6 29 ga. grain oriented lamination steel
Secondary Insulation (transformer) Clear air dry polyester varnish
Termination UL1015, 20 ga. lead wire
Mounting Powder coated steel end bells
Color RAL 5010 Gentian Blue
Weight 9.75 lbs.
Compliance RoHS & REACH
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Existing reviews
Use With The KT-120 Vacuum Tube

Edcor is known for supplying replacement and other vacuum tube transformer products for guitar amplifiers and related products.  But I make audiophile single-ended amplifiers.  The thing is Edcor is better than their price would ever indicate, thus the VALUE of their transformers is way above what you are going to get from boutique audiophile brands known within its community.  

These transformers I matched with the KT-120 tube to make a single-ended 20 watt per channel amplifier.  First, let me say I am astonished by these transformers.  They are huge, but it is their sonic character that is most impressive.  These output transformers in my experience and opinion have to rank among some of the best available and definitely in view of their price.

When it comes to Edcor what you can expect first and foremost is VALUE.  But the sound quality is definitely well into the audiophile range, and better than more expensive well-regarded products(mentioning no names).  They do what an output transformer should, transformer voltage and current into something a speaker can use with no perceived coloration on the sound.  Nothing is lacking or enhanced in the audio spectrum from bass to treble. I just hope they don't become so popular that demand exceeds supply to where the price takes away the amazing value they these transformers are.

From: Terry Gesualdo | Date: 8/6/2021 12:50 PM
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Product Files
Dimensional Drawings
Products specifications
Wattage 25W
Max. Current 200mA
Primary (input) Impedance 3K Ohms
Primary (input) DCR 70 Ohms
Primary (input) Inductance 41H
Screen/Grid Tap 40%
Secondary (output) Impedance Depends on model.
Secondary (output) DCR <1 Ohm
Frequency Response 20~20K Hz., <1dBu
THD+Noise <0.1% @ 1K Hz.
Bobbin Material Nylon 6/6 GF-30
Flammability Rating Class B 130°C
Core Material M-6 29 ga. grain oriented lamination steel
Secondary Insulation (transformer) Clear air dry polyester varnish
Termination UL1015, 20 ga. lead wire
Mounting Powder coated steel end bells
Color RAL 5010 Gentian Blue
Weight 9.75 lbs.
Compliance RoHS & REACH
Product tags