With just one tune on their website it’s really hard to have an idea of what they sound like. They certainly look nice. Have you posted any tunes online? Would like to hear the Low D.
Don’t have a low D, sorry just soprano Bb - E
I am working on twisting the arm of a good whistle/flute player to make a few clips of the ones i do have.
Just had a listen. Audio quality isn’t really good enough to judge it. I find it very strange that manufacturers would not put decent samples on their sites. I looked at a few others tonight and they’d have one or no samples. I’m not sure how they sell any, especially when their prices are higher than other reputable sellers. And when they do have a tune, it’s with a ton of reverb, guitar, etc.
Would love to hear a ImPempe Low D but I think it’s not possible.
Most better makers do not really have to put samples up on their web sites because their products are shown off to a high degree by the recordings made by the professional players that use those whistles. YouTube can be pretty lousy as a tool for judging the suond quality of an instrument IMO.