Thanks to, "Bob" Bethman,for correcting me about the audio output tubes in the SX-25 Halli... The originals it came out with were 2- 6F6GT not 6v6's... I am doing everything I can do to keep it as close to original as I can is why I am looking for the 4000 to 10,000 ohm and the 500 or 600 ohm speaker output windings.. Joe