Voltage mode vs current mode phono stages


Can someone explain the differences in layman's terms and why is one better than the other? 

rsf507

I suppose some aspects of SMD construction are beneficial, especially in a device centered around an op amp, but not all, and not when repair is needed.

This is very true - the proper equipment required to work on SMD boards is around $100k. Most tech's can't afford this investment, and if a manufacturer using SMD technology goes bust - then your precious unit, when it develops a problem will be toast. Even with most manufacturers that use SMD technology, if there is a fault - the "repair" is a new board.

Personally I would never buy a piece of audio kit using SMD technology - seen too many disasters. If you do buy an SMD based unit you have to assume it will need replacing within 5 years.

This is very true - the proper equipment required to work on SMD boards is around $100k.

@dover That depends on the type of SMDs used. The 0402s and the 0201s can be done with fairly simple equipment certainly costing maybe $500 if you stretch it! It can also be done by hand, which is how all of our class D stuff is done (locally). All you need is the right kind of solder station, proper magnification and a steady hand.

@atmasphere , HI Ralph! It's been a while. You been on a ride yet? My wife and I have new bikes this year. The drive trains are somewhere between New Hampshire and Italy.

Very true. I have worked on SMD boards with a needle point on a Weller station using a magnifier lamp, 10X I think. If you remove all the solder with a wick and have things nice and flat you can tack the component down with a dab of thick cyanoacrylate. When it dries solder the contacts. 

Personally, I'm a traditionalist and prefer the point to point wiring in your amps, a thing of beauty. Makes me want to wire a set for myself:-)

You been on a ride yet? My wife and I have new bikes this year. The drive trains are somewhere between New Hampshire and Italy.

This year's ride is leaving Banff on the 10th of June and hoping to arrive at Antelope Wells, NM in under 30 days (we'll see). https://www.youtube.com/watch?v=MW_z-z3tfxw In 2019 I made it to the Brush Mountain Lodge; Steven of this video passed me on Union Pass in Wyoming...