A Pair of Hashimoto SE Tube Output Transformer H-203S 2A3 300B PX4 EL34

Description

New Page 1
FOR SALE
A Pair of
New Single Ended
Tube Output Transformers
H-203S (7W, 2.5K/3.5K Ohms)
from Hashimoto Electric Co., Ltd.
Tokyo, Japan
Possibly One of the Best Sounding Output Transformers
Ever Built
As Good as Tamura or Tango, or Better
With 21st Technologies
Based on 60 years of Sansui Experiences
Introducing the Hashimoto H-203S:
The Hashimoto H-203S is for applications that require 2.5K or 3.5K Ohms primary with up to 7 Watts output level into 4, 8, 16 Ohms.  The H-203S is equipped with an  Ultra-Linear tap for 2.5K or 3.5K Ohms primary, and its frequency response covers between 45Hz and 100,000Hz (+-3db) - please click the right thumbnail to see the actual chart.
The H-203S is called a universal type because it can be used under 2.5K or 3.5K Ohms of primary through separate B+ terminals.  Since the H-203S has separate B+ terminals, it also has independent Ultra-Linear taps for each primary impedance.
The H-203S is suitable for single-ended applications that utilize popular vacuum tubes, such as 300B, 2A3, KT-88, 6550, EL34 (6CA7), 6B4G, 6A3, and 6L6-GC.  The H-203S is a little brother of Hashimoto's one of the best sellers, the H-20-3.5U, 20W SE Out Put Transformer.  Although the output level of the H-203S is rated less than that of the H-20-3.5U, the H-203S has been one of the most poplar Hashimoto models due to its fantastic sound.  If you would like to enjoy sensitive low powered SE sound through high efficiency full range speakers, the H-203S should be the one for you to pick up.
The H-203S measures 66 (W) x 66 (D) x 85 (H) mm, and weighs 1.3Kg (2.9 LB).  The Primary Inductance can be chosen between 9H/60mA (3.5K Ohms) and 6.5H/70mA (2.5K Ohms).  The Maximum DC Current can be up to 90mA.  The H-203S consists of a EI core.  The core material is 0.35mm Orient Core Z, which is the directional silicon steel, from Nippon Steel Corporation, equivalent to M6 .  Please refer to our Hashimoto Transformer Technical Aspects page for more details on technical details as well as Hashimoto Product Design Philosophy.
As being mentioned, the Hashimoto H-203S is one of the most popular output transformers that Hashimoto Electric, Ltd. in Tokyo Japan introduced in 2002.  Today, Hashimoto products are regarded as one of the premier tube amp transformers among Japanese hi-fi enthusiasts and columnists who originally introduced the sound of single-ended amplifiers in the world during1980’s and 1990’s.  In fact, some of most influential columnists have been switching their favorite transformers of their choice from Tamura or Tango, to ones with Hashimoto brand, such as the H-203S.
Who is Hashimoto Electric anyway?  Hashimoto is by-no-means a new comer in this very traditional, but exciting industry.  Hashimoto Electric, Ltd., in Tokyo Japan has been a
long-time Sansui transformer OEM (since 1960’s).  Hashimoto merged Sansui’s transformer business in 1978, and Hashimoto was the company who reproduced the AU-111 transformers when Sansui reissued the famed AU-111 in 1999 as the AU-111 Vintage.  As a matter of fact, Hashimoto is the only company that still carries the original Sansui logo on its product lines, and some of Hashimoto’s key engineers are ex-Sansui engineers.
Today, Hashimoto Electric produces not only various traditional transformers that Sansui pioneered many years ago, but also high-end tube amp transformers under its own brand name.  The amazing thing is that all Hashimoto transformers are still handcrafted one-by-one by very skilled and experienced employees (Please refer to the actual photos I took when visited Hashimoto last June).
Because some of Hashimoto engineers have more than 40 years of transformer designing experiences through out Sansui and Hashimoto era, all Hashimoto transformers
still maintain the superior characteristics and sound of Sansui transformers
.  In addition,
all Hashimoto transformers are redesigned from the ground up.  This means that Hashimoto transformers are the 21st Century products that have been fine-tuned with computer aided programs and have utilized new materials that were simply not available forty some years ago.  As the result, the  H-203S is one of the leading Hashimoto products that have been winning reputations among critics as, "
The sound through Hashimoto transformers
simply belongs to a different class compared with that of competitions.
"
Should you need a pair of the H-507S (5K/7K Ohms, 7W) SE output transformer.  Or higher output rated H-20 class of single-ended output transformers in various impedance, such as 2.5K, 3.5K, 5K, 7K, 10K, or 14K Ohms.  Please let us know.  We will import them, and list them on eBay.
Who are we?  We are a Michigan based corporation being in the IT related business since the early 1990's.  We have been exploring the web based business opportunities since 2002, and today we are the authority of Sansui literatures with more than 1,000 customers.  Almost all of our Sansui literature business have been conducted through web space for the last three years.  Now, we are expanding our horizon into the hi-fi hardware business by introducing the best products available in the world.  Because our business is entirely based on the web space, our priority is nothing but the customer satisfaction and customer support.  Please purchase our products with confidence.