Hi Cello, The best power cord I have found for the Supratek's is the Moray James PWR 1.5. The manufacturer has recently changed his design and claims it would be cost prohibitive to continue producing the 1.5 in small lots for those who request it. I have had his upgraded version (a PWR 2.5) for a number of months and find it to be NOT very good in this application - or any other.
The Manufacturer has sent me an even newer version of the PWR 2.5 with modifications to make it similar to the PWR 1.5 - but it has not yet arrived. So I do not have a comment on that yet.
The only problem with this manufacturer is that the designs keep changing. In Fact, I wouldn't be too certain that if I purchased a new PWR 1.5 today, if it would be the same cord I have had for the past year.
Sorry I wasn't more helpful on this.
The Manufacturer has sent me an even newer version of the PWR 2.5 with modifications to make it similar to the PWR 1.5 - but it has not yet arrived. So I do not have a comment on that yet.
The only problem with this manufacturer is that the designs keep changing. In Fact, I wouldn't be too certain that if I purchased a new PWR 1.5 today, if it would be the same cord I have had for the past year.
Sorry I wasn't more helpful on this.