The transformer set is suitable for building SE projects based on tubes like EL84 or building projects based on Decware/Spud amplifier topology.

The set comprises of a pair of Output Transformers .

TECHNICAL FEATURES: 

Primary Impedance: 7K5

Secondary Impedance: 8 Ω

Airgap set:35mA

Primary Dc resistance: 471 Ohm

Max Dc current :95mA

Frequency Response: 7hz-35Khz -3bB at 1W output (EL84 triode without GNFB)

Maximum output power 5W

Core size :EI60/30

Dimensions: 62mx51.5mmx55mm (86mm foot distance)

Footprint hole 5x6mm

Weight: 750gr per transformer.

6C33 Single Ended 600K:4-8R Output Transformer(Pair) 60W Designed for 6C33 tube or paralleled tubes

TECHNICAL FEATURES:

Primary Impedance: 600R

Secondary Impedance:4/8 Ω

Primary Inductance Lp=8H @17Vrms/50hz /200mA dc

airgap set for : 200mA up to 400mA (on request )

Primary DC resitance:27R

Max Dc current :500mA

Maximum output power :60W

Frequency Response: 6.4Hz-75Khz -3dB , Rsource =100R

Leakage inductance:1.3mH/1khz

core material:High quality CRGO silicon steel M6 , DIN EN 10107 ,made in Europe

core size : EI 120/60 , lamination thickness /0.35mm

Weight:6Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting: Vertical All transformers are tested in real working tube amplifiers before shipping.

Tube amplifier projects and related circuits use high voltage and contact with high voltages can cause serious injury or death.

If you are not experienced with high voltage safety and working with high voltage, this is not the project for you and you act at your own risk and responsibility.

TECHNICAL FEATURES:

Primary Impedance: 4K

Secondary Impedance:8 Ω

Primary Inductance Lp=39H @17Vrms/50hz /90mA dc

Leakage inductance : 3.9mH

airgap set for : 90 mA

Primary Dc resistance: 179 Ohm

Max Dc current :300mA

Maximum output power :25W

Frequency Response: 12Hz-35Khz -1dB (Rsource=820R)

8Hz-66Khz -2dB

4.8Hz-110Khz -3dB

core material: High quality CRGO silicon steel M6 (19000Gauss) , DIN EN 10107 ,made in Europe

core size : EI 96/60

lamination thickness /0.35mm

dimensions:129mmx100mmx81mm

weight :3.5Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enameled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting:Vertical/Horizontal Open Rrame ,ready for pottinng .

Customizable Endbell Option also available.

Single Ended 5K:8R Output Transformer(Pair) 35W, ultralinear

Designed for EL34 6L6 KT88 6550 in triode or ultralinear mode or paralleled 845 tubes

TECHNICAL FEATURES:

Primary Impedance: 5K

Secondary Impedance:8 Ω

ultralinear tap :37% ( or23% -42% on request)

airgap set for : 80 -250mA (on request)

Primary DC resitance:102R

Max Dc current :350mA

Maximum output power :35W

Frequency Response: 6.4Hz-40Khz -3dB ,

Leakage inductance:5.19mH/1khz

core material:High quality CRGO silicon steel M6 , DIN EN 10107 ,made in Europe

core size : EI 120/60 ,

lamination thickness /0.35mm

Weight:5.8Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting: Vertical

All transformers are tested in real working tube amplifiers before shipping. Tube amplifier projects and related circuits use high voltage and contact with high voltages can cause serious injury or death.

If you are not experienced with high voltage safety and working with high voltage, this is not the project for you and you act at your own risk and responsibility.

TECHNICAL FEATURES:

Primary Impedance: 5K

Secondary Impedance:4/8 Ω

ultralinear tap :42% ( or23% -33% on request)

Primary Inductance Lp=39H @17Vrms/50hz /80mA dc

Leakage inductance : 10mH

airgap set for : 80-120mA (οn request)

Primary Dc resistance: 229 Ohm

Max Dc current :160mA

Maximum output power :25W

Frequency Response:

16Hz-22Khz -1dB (Rsource=5k)

12Hz-33Khz -2dB

core material:High quality CRGO silicon steel M6 (19000Gauss), DIN EN 10107 ,made in Europe

core size : EI 96/50

lamination thickness /0.35mm

dimensions:119mmx100mmx81mm

weight :3Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting:End bells for Vertical placement

TECHNICAL FEATURES:

Primary Impedance: 3K5

Secondary Impedance:4/8 Ω

ultralinear tap :42% ( or23% -33% on request)

Primary Inductance Lp=30H @17Vrms/50hz /80mA dc

Leakage inductance : 5,2mH

airgap set for : 80-120mA (οn request)

Primary Dc resistance: 229 Ohm

Max Dc current :160mA

Maximum output power :25W

Frequency Response:

10Hz-38Khz -1dB (Rsource=1k5)

6,8Hz-44Khz -2dB

5,6Hz-90Khz-3dB

core material:High quality CRGO silicon steel M6 (19000Gauss), DIN EN 10107 ,made in Europe

core size : EI 96/50

lamination thickness /0.35mm

dimensions:119mmx100mmx81mm

weight :3Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting:End bells for Vertical placement

TECHNICAL FEATURES:

Primary Impedance: 5k

Secondary Impedance:4/8 Ω

ultralinear tap :42% ( or23% -33%-50% on request)

Primary Inductance Lp=20H @17Vrms/50hz

Leakage inductance :5.6mH

airgap set for : 80mA

Primary Dc resistance: 231 Ohm

Max Dc current :250mA

Maximum output power :20W

Frequency Response: 15Hz-45Khz -3dB

core material:High quality CRGO silicon steel M6 , DIN EN 10107 ,made in Europe

core size : EI 84/50

dimensions:82mmx75mmx87mm

weight :2.32Kgr per transformer

Designed for EL84-6BQ5-ECL86-ECL82-6V6 etc in triode/ultralinear mode or tubes with similar impedance.

Those audio transformers are ideal for building amplifier projects based on Spud philoshophy, providing detailed sound and microdynamics that small transformers are not capable of.

TECHNICAL FEATURES:

Primary Impedance: 5k Secondary

Impedance: 4/8/16 Ω

Ultralinear tap : 25% P

rimary Inductance Lp=35H @17Vrms/50hz Airgap

set for : 50mA Primary

Dc resistance: 240 Ohm

Max Dc current :133mA

Maximum output power : 8W

Frequency Response: 12Hz-46Khz -3dB   Test conditions/tube : Rsource =3k3, RLsec=16R

Core material: high quality M6 grain oriented silicon steel (19000Gauss), made in Europe.

Core size : EI75/30 Lamination thickness: 0.35mm

Dimensions:77mx60mmx65mm

Weight: 1.13Kgr per transformer

Winding Wire: Double coated Grade 2 enamelled copper wire Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strenght.

Mounting: Endbells suitable for vertical placement.

Designed for EL84-6BQ5-ECL86-ECL82-6V6 etc in triode/ultralinear mode or tubes with similar impedance.

Those audio transformers are ideal for building amplifier projects based on Spud philoshophy, providing detailed sound and microdynamics that small transformers are not capable of.

TECHNICAL FEATURES:

Primary Impedance: 3k5

Secondary Impedance: 4/8 Ω

Ultralinear tap : 25%

Primary Inductance Lp=35H @17Vrms/50hz

Airgap set for : 50mA

Primary Dc resistance: 224 Ohm

Max Dc current :133mA

Maximum output power : 8W

Frequency Response: 12Hz-48Khz -3dB at 1W output power

Test conditions/tube : El84 triode connected, B+= 300V Dc , Ik=36mA, cathode biased

Core material: high quality M6 grain oriented silicon steel (19000Gauss), made in Europe.

Core size : EI75/30 Lamination thickness: 0.35mm

Dimensions:77mx60mmx65mm Weight: 1.13Kgr per transformer

Winding Wire: Double coated Grade 2 enamelled copper wire Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strenght.

Mounting: Endbells suitable for vertical placement.

Single Ended 1K Output Transformer(Pair) 60W, ultralinear

Designed for EL34 6L6 KT88 6550 in triode or ultralinear mode

TECHNICAL FEATURES:

Primary Impedance: 1K

Secondary Impedance:8 Ω

ultralinear tap :42% ( or23% -33% on request)

airgap set for : 250mA

Primary DC resitance:76R

Max Dc current :380mA

Maximum output power :60W

Frequency Response: 5Hz-51Khz -3dB , (Rsource=330R)

core material:High quality CRGO silicon steel M6 , DIN EN 10107 ,made in Europe

core size : EI 120/60 ,lamination thickness /0.35mm

Weight:5.8Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting: drop through chassis

All transformers are tested in real working tube amplifiers before shipping.

Tube amplifier projects and related circuits use high voltage and contact with high voltages can cause serious injury or death. If you are not experienced with high voltage safety and working with high voltage, this is not the project for you and you act at your own risk and responsibility.