converting from 110 to 220

good info Albert... actually i think (need to confirm) linn gear, their newer stuff, senses/switches automatically/internally.

Most homes and newer and decent apartments will have 220V [technically, 120/240V], if they have either an electric dryer, water heater, stove, or individual A/C units. If you live in an apartment, be sure to get the landlord's OK, and be prepared to use HIS electrician, or you could find yourself holding an eviction notice..right quick!

thx fatparrot...no landlord as its an actual townhouse, not a condo called a townhouse as many realtors etc refer to. so, to keep it stupid simple, can i simply replace my 2 20 amp breakers with, for example, 1 40 amp breaker, run wire (which gauge wire to use for 220) ideally can just remove old line and refish new line, then install a 220 receptacle. come to think of it...all appliances are gas..so are my options out? u do have a 60amp i think circuit for central ac...

I currently have 2 dedicated 20 amp 110v lines.
Jaf2290

An electrician can convert one or both of the 120V dedicated branch circuits to a 240V branch circuit/s. The receptacle must be changed out to a 250V receptacle and at the electrical panel the branch circuit wire will be reconnected to a 2 pole 15 or 20 amp breaker.

Just so you know a smart knowledgeable electrician may refuse to install a 240V branch circuit for your audio equipment....... For residential applications NEC does not allow such if memory serves me right.