Audio Transformers / Signal Transformers

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Classic Audio Transformers

Hammond Manufacturing Classic Audio Transformers feature high-quality magnetics for tube applications such as high-fidelity (hi-fi) audio and guitar amplifiers. Hammond delivers proven expertise and experience in the design and manufacturing of these products. The portfolio includes a variety of transformers, including high and low voltage, single-ended and push-pull tube audio output, modulation, and more.

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Part #

Audio Transformers / Signal Transformers Output transformer, push-pull, 35W , primary 6,600 ct, 200 ma., secondary 3.5/8/16/250/500

1650G
Hammond Manufacturing
1: Rp3.115.334
1In Stock

Mfr. Part No.
1650G

Mouser Part No
546-1650G

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 35W , primary 6,600 ct, 200 ma., secondary 3.5/8/16/250/500

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Datasheet

1In Stock

Rp3.115.334

Rp2.953.339

Rp2.943.983

Rp2.936.277

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

6.6 kOhms

16 Ohms

Tube Output Push Pull

3.13 in

3.75 in

3.81 in

1608A-1650A Series

Audio Transformers / Signal Transformers Tube output transformer, push-pull, Hi-Fi, potted, 60 watts, 6600 ohms

1650PAP
Hammond Manufacturing
1: Rp6.007.765
2In Stock

Mfr. Part No.
1650PAP

Mouser Part No
546-1650PAP

Hammond Manufacturing

Audio Transformers / Signal Transformers Tube output transformer, push-pull, Hi-Fi, potted, 60 watts, 6600 ohms

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Datasheet

2In Stock

Rp6.007.765

Rp5.331.531

Rp5.321.808

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Terminals

30 Hz to 30 kHz

6.6 kOhms

16 Ohms

Single

Tube Output Push Pull

3.13 in

4.25 in

3.81 in

1650P Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 10W , primary 8,000 ct, 100 ma., secondary 4-8-16

1608A
Hammond Manufacturing
1: Rp2.464.051
4Expected 12/02/2026

Mfr. Part No.
1608A

Mouser Part No
546-1608A

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 10W , primary 8,000 ct, 100 ma., secondary 4-8-16

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Datasheet

4Expected 12/02/2026

Rp2.464.051

Rp2.257.475

Rp2.186.109

Rp2.128.686

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

8 kOhms

4 Ohms, 8 Ohms, 16 Ohms

Single

Tube Output Push Pull

2.5 in

2.75 in

3.06 in

1608A-1650A Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 120W , primary 1,900 ct, 403 ma., secondary 4-8-16

1650TA
Hammond Manufacturing
1: Rp4.383.410
2Expected 18/02/2026

Mfr. Part No.
1650TA

Mouser Part No
546-1650TA

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 120W , primary 1,900 ct, 403 ma., secondary 4-8-16

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Datasheet

2Expected 18/02/2026

Rp4.383.410

Rp3.979.431

Rp3.853.394

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

1.9 kOhms

4 Ohms, 8 Ohms, 16 Ohms

Single

Tube Output Push Pull

4.5 in x 3.75 in x 4.56 in

4.5 in

3.75 in

4.56 in

1608A-1650A Series

Audio Transformers / Signal Transformers Audio transformer, universal push-pull tube output, 3 watts

125A
Hammond Manufacturing
1: Rp1.056.363
404Factory Stock Available

Mfr. Part No.
125A

Mouser Part No
546-125A

Hammond Manufacturing

Audio Transformers / Signal Transformers Audio transformer, universal push-pull tube output, 3 watts

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Datasheet

404Factory Stock Available

More Info Available

Rp1.056.363

Rp933.261

Rp899.871

Rp870.885

View

Min.: 1
Mult.: 1

Audio Transformers

Push-Pull

Terminals

150 Hz to 15 kHz

14.94 H

25 kOhms

15 Ohms

Single

Tube Output Push Pull

2.06 in

1.25 in

1.19 in

125A-125E Series

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

124C
Hammond Manufacturing
1: Rp604.501
13Factory Stock Available

Mfr. Part No.
124C

Mouser Part No
546-124C

Hammond Manufacturing

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

Learn More

Datasheet

13Factory Stock Available

More Info Available

Rp604.501

Rp562.855

Rp534.052

Rp516.256

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Terminals

150 kHz to 15 kHz

10 kOhms

90 kOhms

Single

Tube Driver

124 Series

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

124E
Hammond Manufacturing
1: Rp1.300.915
48Factory Stock Available

Mfr. Part No.
124E

Mouser Part No
546-124E

Hammond Manufacturing

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

Learn More

Datasheet

48Factory Stock Available

More Info Available

Rp1.300.915

Rp1.166.255

Rp1.102.044

Rp1.079.295

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Terminals

150 kHz to 15 kHz

32 H

15 kOhms

33.8 kOhms, 135 kOhms

Tube Driver

2.88 in x 1.7 in x 2.37 in

2.37 in

1.74 in

2.88 in

124 Series

Audio Transformers / Signal Transformers Audio transformer, universal single ended or push-pull tube output, 8 watts

125J
Hammond Manufacturing
1: Rp1.063.885
9Factory Stock Available

Mfr. Part No.
125J

Mouser Part No
546-125J

Hammond Manufacturing

Audio Transformers / Signal Transformers Audio transformer, universal single ended or push-pull tube output, 8 watts

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Datasheet

9Factory Stock Available

More Info Available

Rp1.063.885

Rp940.783

Rp907.393

Rp878.590

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Terminals

150 Hz to 15 kHz

5.6 H

2.5 kOhms, 4 kOhms

8 Ohms, 4 Ohms

Tube Output Push Pull

3.25 in x 1.5 in x 1.94 in

1.94 in

3.25 in

1.5 in

125J Series

Audio Transformers / Signal Transformers Audio transformer, tube driver, interstage, for single ended tube amplifiers

126C
Hammond Manufacturing
1: Rp1.835.517
9Factory Stock Available

Mfr. Part No.
126C

Mouser Part No
546-126C

Hammond Manufacturing

Audio Transformers / Signal Transformers Audio transformer, tube driver, interstage, for single ended tube amplifiers

Learn More

Datasheet

9Factory Stock Available

More Info Available

Rp1.835.517

Rp1.770.022

Rp1.756.630

Rp1.744.338

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

20 Hz to 20 kHz

106 H

10 kOhms

Single

Tube Driver Interstage

3.12 in x 2.5 in x 3.12 in

3.12 in

2.5 in

126 Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 15W , primary 5,000 ct, 100 ma., secondary 4-8-16

1615A
Hammond Manufacturing
1: Rp2.647.878
18Factory Stock Available

Mfr. Part No.
1615A

Mouser Part No
546-1615A

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 15W , primary 5,000 ct, 100 ma., secondary 4-8-16

Learn More

Datasheet

18Factory Stock Available

More Info Available

Rp2.647.878

Rp2.434.514

Rp2.360.580

Rp2.298.937

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

5 kOhms

4 Ohms, 8 Ohms, 16 Ohms

Tube Output Push Pull

3.06 in

3.25 in

2.5 in

1608A-1650A Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 30W , primary 5,000 ct, 128 ma., secondary 4-8-16

1645A
Hammond Manufacturing
1: Rp3.478.585
28Factory Stock Available

Mfr. Part No.
1645A

Mouser Part No
546-1645A

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 30W , primary 5,000 ct, 128 ma., secondary 4-8-16

Learn More

Datasheet

28Factory Stock Available

More Info Available

Rp3.478.585

Rp3.133.313

Rp3.025.072

Rp2.979.941

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

5 kOhms

16 Ohms

Single

Tube Output Push Pull

3.75 in

2.5 in

3.06 in

1608A-1650A Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 50W , primary 3,400 ct, 318 ma., secondary 4-8-16

1650KA
Hammond Manufacturing
1: Rp3.626.454
27Factory Stock Available

Mfr. Part No.
1650KA

Mouser Part No
546-1650KA

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 50W , primary 3,400 ct, 318 ma., secondary 4-8-16

Learn More

Datasheet

27Factory Stock Available

More Info Available

Rp3.626.454

Rp3.257.516

Rp3.120.104

Rp3.079.009

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

3.4 kOhms

4 Ohms, 8 Ohms, 16 Ohms

Tube Output Push Pull

1608A-1650A Series

Audio Transformers / Signal Transformers Output transformer, push-pull, 280W , primary 1,900 ct, 806 ma., secondary 4-8-16

1650WA
Hammond Manufacturing
1: Rp8.843.139
5Factory Stock Available

Mfr. Part No.
1650WA

Mouser Part No
546-1650WA

Hammond Manufacturing

Audio Transformers / Signal Transformers Output transformer, push-pull, 280W , primary 1,900 ct, 806 ma., secondary 4-8-16

Learn More

Datasheet

5Factory Stock Available

More Info Available

Rp8.843.139

Rp8.407.788

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

1.9 kOhms

4 Ohms, 8 Ohms, 16 Ohms

Single

Tube Output Push Pull

109.5 mm

111.25 mm

113.35 mm

1608A-1650A Series

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

124F
Hammond Manufacturing
1: Rp1.317.059
6Factory Stock Available

Mfr. Part No.
124F

Mouser Part No
546-124F

Hammond Manufacturing

Audio Transformers / Signal Transformers Transformer, tube driver, interstage, 5 watts, for push-pull circuits

Learn More

Datasheet

6Factory Stock Available

More Info Available

Rp1.317.059

Rp1.298.530

Rp1.254.133

Rp1.245.326

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

124 Series

Audio Transformers / Signal Transformers Audio transformer, tube driver, interstage, for single ended tube amplifiers

126B
Hammond Manufacturing
1: Rp1.903.031
10Factory Stock Available

Mfr. Part No.
126B

Mouser Part No
546-126B

Hammond Manufacturing

Audio Transformers / Signal Transformers Audio transformer, tube driver, interstage, for single ended tube amplifiers

Learn More

Datasheet

10Factory Stock Available

More Info Available

Rp1.903.031

Rp1.821.758

Rp1.818.089

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Terminals

20 Hz to 20 kHz

5 kOhms

Single

Tube Driver Interstage

3.12 in

2.5 in

126 Series

Audio Transformers / Signal Transformers HIFI AUDIO OUTPUT

1616
Hammond Manufacturing
1: Rp2.778.135
1Factory Stock Available

Mfr. Part No.
1616

Mouser Part No
546-1616

Hammond Manufacturing

Audio Transformers / Signal Transformers HIFI AUDIO OUTPUT

Learn More

Datasheet

1Factory Stock Available

More Info Available

Rp2.778.135

Rp2.603.848

Rp2.552.846

Rp2.525.327

View

Min.: 1
Mult.: 1

1608A-1650A Series

Audio Transformers / Signal Transformers Push-Pull, Potted Primary 3400 CT, 50W

1650KP
Hammond Manufacturing
1: Rp4.872.881
Non-Stocked

Mfr. Part No.
1650KP

Mouser Part No
546-1650KP

Hammond Manufacturing

Audio Transformers / Signal Transformers Push-Pull, Potted Primary 3400 CT, 50W

Datasheet

Non-Stocked

Rp4.872.881

Rp4.797.296

Rp4.696.759

View

Min.: 1
Mult.: 1

Tube Application Power Transformers

Push-Pull

Wire Lead

30 Hz to 30 kHz

3.4 kOhms

16 Ohms

Tube Output Push Pull

3.31 in

3.88 in

4.25 in

1650P Series

Classic Audio Transformers

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1.43 in
1.63 in
1.68 in
1.94 in
2.06 in
2.37 in
2.38 in
2.5 in
2.81 in
3.06 in
3.12 in
3.13 in
3.25 in
3.31 in
3.5 in
3.69 in
3.75 in
3.81 in
4 in
107.95 mm

1.25 in
1.35 in
1.38 in
1.46 in
1.5 in
1.74 in
1.75 in
2 in
2.5 in
2.75 in
2.81 in
3.12 in
3.13 in
3.25 in
95.25 mm
3.75 in
3.88 in
4.25 in
111.25 mm
4.44 in

1.19 in
1.38 in
1.4 in
1.5 in
1.69 in
2 in
2.31 in
2.38 in
2.5 in
2.81 in
2.88 in
3.06 in
3.13 in
3.81 in
4.25 in
113.35 mm
4.5 in
4.56 in
115.82 mm
4.65 in