News

December 2010

• Granada Audio 
  is a new distributor for Spain and Spanish-speaking countries. Granada Audio is primarily distributing transformers for tube amplifier applications.
• We have collected our  tube output transformers in a separate page, in a list sorted by primary impedance. The objective is to make it easier to find the most suitable OPT for your application. 
  
• We have had an irritating problem making our mains transformers for tube amplifiers consistently quiet. We think we have finally solved the problem by replacing the internal polyester foil insulation with paper insulation.
  Transformers currently available with paper insulation are LL1648, LL1649, LL1650, LL1651, LL1683, LL2738
• Finally, after many request, we have a good-looking (we think!) housing for our LL1620-size tube amp transformers. The housing consists of four metal sheet parts and is shipped with required assembly hardware.

New transformer types

April 2012

• SILVER WIRE TRANSFORMERS!
  Our top-of-the-line moving coil stepup transformers are now available with high purity silver wire windings. The transformers are named
  
  LL1931Ag (1+1 : 8+8, amorphous core)
  LL1933Ag (1+1 : 8+8, mu metal core)
  LL1941Ag (1+1 : 16+16, amorphous core)
  LL1943Ag (1+1 : 16+16, mu metal core)
  
  In spite of the small difference in electrical conductivity between copper and silver (approx 6%), the sonic difference is not negligible.
  Kevin Carter's (of K&K Audio) comments can be found on audioasylum.com, 
  A similar report is received from Thomas Mayer via vinylsavor.blogspot.com
• LL1944
  is a four output splitting transformer primarily designed for active splitters, speaker boxes etc. 
  The LL1944 is similar to the LL1560, but without the 6dB stepdown from primary to secondary.
• LL2743
  is a low winding resistance anode choke for parafeed and for low current power supply applications.
• LL1940
  is a tube microphone transformer with "character". 
  In the LL1940 we are using a silicon-iron C-core, which is unusual for this type of application. The result is a transformer with more "transformer sound character", compared to a classic mu metal lamination transformer.
  
  
  

December 2010

• LL1590 
  is a transformer for splitting into 1 direct + 3 isolated outputs.
• LL1941 (amorphous core) and LL1943 (mu metal lamination core) 
  are high turns ratio (1:16 and 1:32) versions of our top-of-the-line MC transformers LL1931 and LL1933. They are designed for low impedance, low output cartridges such as Ortofon SPU and similar.
• LL1691B 
  is a 20k : 8 ohm version of our big LL1691 output transformer.
• LL2735B 
  is a 16k : 8 ohms tube output transformer designed for low power, high rp tubes such as 10Y or 801A in SE applications.
• LL2738 
  is a mains transformer for filament currents. The transformer has eight 6.3V / 3A secondary windings plus one 110V / 0.1A winding for grid offset.
  

FUNCTION LIST
A list of our transformers sorted by appflication for quick lookup (PDF)

BUY DIRECT
(if we have no local distributor)

REFERENCE LIST
some of the companies in which products our transformers can
be found

PHOTO GALLERY