Christian Linberg Trombone Resistance Balancers for Sale (Pre-used).This is not being used as I currently only play bass trombone. GBP27.50 ovno to include postage in the UK. Please pm me or email:brassmattaz@gmail to make an offer. Also contact me you are interested and need further information. Thank you for looking and I look forward to your replies. trombo Christian Lindberg Resistance Balancer Have you ever felt that for a certain passage you need a bit more resistance? Or a bit less? Have you ever felt too "brassy" in a church accoustic, and wish you could get the sound smoother, or darker? Well, Christian Lindberg has invented something that will make it possible to alter the sound in a remarkable way: With Christian Lindberg Resistance Balancer you can alter your sound and resistance in seconds, by easily wrap it around your bell!! All the balancers, as you will notice, will produce each an individual sound, and without altering your playing technique you will be able to vary your sound in many many ways, which naturally will make you a more versatile player!!!