The Jelco 750 Series are indeed a huge bang for the buck-I own a 750D.
Replacing the stock Jelco mounting base should be mandatory, however, for anyone running any kind of more exotic stylus profile like line contacts or microridge. The stock base just has too much slop in it which allows the arm to tilt over and wreaks havoc with proper azimuth adjustment.
Both TTWeights in North America and Ammonite Acoustics in the UK manufacture an aftermarket base which eliminates this problem. For around $100 the Ammonite base is a no brainer in my experience.
Pricing on the TTWeights base is not as clear to me-it looks like you can purchase a base unit separately or that unit with VTA on the fly. Not really sure but I would expect it to offer a similar advantage to the Ammonite base which I can attest to working very well.
Replacing the stock Jelco mounting base should be mandatory, however, for anyone running any kind of more exotic stylus profile like line contacts or microridge. The stock base just has too much slop in it which allows the arm to tilt over and wreaks havoc with proper azimuth adjustment.
Both TTWeights in North America and Ammonite Acoustics in the UK manufacture an aftermarket base which eliminates this problem. For around $100 the Ammonite base is a no brainer in my experience.
Pricing on the TTWeights base is not as clear to me-it looks like you can purchase a base unit separately or that unit with VTA on the fly. Not really sure but I would expect it to offer a similar advantage to the Ammonite base which I can attest to working very well.