Hashimoto
Hashimoto Electric Co., Ltd., Japan





Product information incl. outline drawings (pdf)



Single-Ended output transformers
with SG tap
                 

Type

Power

Prim.
imp.

Sec.
imp.
Freq. response
(Rp=Zp, -2dB)
max
current
Application

Dimension
(mm)
Weight

                 
H-30-5S
30-
(50Hz)
5K
4,8,16
25Hz-70KHz
160mA

PX25,UX-50
DA-30, PX-25A

100x110x120
4,1Kg
H-30-3,5S

30
(50Hz)

3,5K
4,8,16
25Hz-80KHz
200mA

300B, PX25
6550A, 6L6GC

100x110x120
4,1Kg
H-20-14U
(no SG tap)

20
(50Hz)

10K
14K
4,8,16
30Hz-50KHz
80mA

6V6, VT62/801A, 42, 6F6, 10

80x88x110
2,4Kg
datasheet H-20-14U

H-20-7U

20
(50Hz)

5k
7K
4,8,16
25Hz-70KHz
100mA

6V6, 6L6GC, 6BQ5
6F6, KT66, VT52

80x88x110
2,4Kg
datasheet H-20-7U

H-20-3,5U

20
(50Hz)

2.5K
3.5K
4,8,16
25Hz-90KHz
140mA

300B, EL34, 2A3
6B4G, 6L6GC

80x88x110
2,4Kg
datasheet H-20-3,5U

H-20-600

20
(50Hz)

600R
4,8,16
30Hz-100KHz
300mA

6C33C

80x88x110
2,4Kg
datasheet H-20-600

H-507S

7
(50Hz)

5K
7K
4,8,16
45Hz-100KHz
±3dB
65mA

6V6, 6BQ5, 71A
6F6, 7189A, 6AC5

66x66x85
1,3Kg
datasheet H-507S

H-203S

7
(50Hz)

2,5K
3,5K
4,8,16
45Hz-100KHz
±3dB
90mA

2A3, 6B4G, 6A3
300B, 6L6, KT88

66x66x85
1,3Kg
datasheet H-203S

HC-507U

20
(50Hz)

5K
7K
4,8,16
30Hz-45KHz
100mA

6V6, 6BQ5, 71A
6F6, 7189A, 6AC5

90x90x85
2,0Kg
datasheet HC-507U

HC-203U

20
(50Hz)

2,5K
3,5K
4,8,16
30Hz-60KHz
130mA

2A3, 6B4G, 6A3
300B, 6L6, KT88

90x90x85
2,0Kg
datasheet HC-203U

                 




Hashimoto HC-203U SE output transformer

Information found on the internet:
http://jelabs.blogspot.nl/2013/12/hashimoto-hc-203u-se-output-transformer.html

 

In the past I have used a pair of H20-14U for the JEL SE10dx monos project and I'm also very familiar with the not quite so Simple 45 fitted with H20-7Us built by Setup 2 for the November Hi-Fi Show head honcho. Today I will report on the entry level SE OPT offering from Hashimoto.

Technical and listening tests were conducted using the JEL SE2A3DX circuit.

Aside from a 3.71mm difference in lamination thickness and use of flying leads instead of terminals (U-808) these two transformers seem to be technical and physical twins.
But sonically they're not even distant cousins. The HC-203U is a bold performer and gives a front row presentation. Given its rather small stature, it has bass slam and definition that I associate with transformers twice its size. Vocals are presented in a lifelike manner and there is enough extension in the highs to give a sense of spaciousness and airiness.
The Hashimoto HC-203U is what I always wanted the Tango U-808 to be.

 

 


Hashimoto H-30


Hashimoto H-20


Hashimoto H-203S


Hashimoto HC-507U