Based on the dual dissimilar triode 6FD7, it gives very smooth, clean 2A3-like sonics with plenty of midrange detail and transparent highs. Only 3.5dB of negative feedback is used to give tight bass performance with her stock EDCOR XSE-15-8-5K output transformers with a frequency response of 24Hz to 19KHz at full power of 2.5 watts per channel (17Hz to 22KHz at 1 watt).
More pictures of this amplifier (shown with old stock Stancor power transformer used in the prototype): Pic 1, Pic 2, Pic 3. Production model uses the EDCOR XPWR106 (or their 120/240V variant) power transformer.
The Chinook has proven to be able to drive "SET-stubborn" fullrange speakers easily.
94 dB SPL sensitivity speakers are recommended but they are a proven performer with the 91 dB Planet10-HiFi Fonken speakers.
Aluminum chassis, oiled B.C. softwood side panels (poplar available no extra charge).
