I have a brand new boxed pair of RS1 headphones and the matching RA1 9v amplifier ( the little one made of solid mahogany). I bought these new due a nagging partner who complained about my music. I then decided it would be easier , and probably more fun to leave her, which I did :-) I'd already ordered and paid for these. The pair was £1000 ish. I'm not absolutely sure, just testing the water. PM me if your interested, we can start a dialogue ;)