Jelco SA-750D or Rega RB250


I'm looking for very specific advice. I'll list some key words, can you guys please tell me which arm matches them better? Between Jelco SA-750D and Rega RB250 (or variants such as RB251, RB202, RB220) Thanks for all of the help.

Bolder, bigger, wider soundstage, more pronounced midbass, more bass slam. 

invictus005

Beats me, Vinny. But the Audiomods is sure an interesting design, which appeals to me. Often times there is no clear "winner" amongst a group of arms (or anythings), but rather trade-offs. If I had or was thinking of going in the Rega direction, I would put the Audiomods high on my "check it out" list. Jeff addresses some design issues Roy Gandy doesn't---read all the design info on the website, a couple of times. Unusual, unique designs appeal to me, and I find the Audiomods design-to-price ratio very high. It's owners rave about it, but I finally decided not to get one because of the unique demands my cartridge of choice (Decca/London) places on an arm. It may have worked okay, but probably not optimally.

A lot of people are very happy with their Jelco arm, but I disapprove of S-shaped arms (unipivots, too). Linn has kind of lost their leadership edge, haven't they? But their older ones are still high quality products, as are Origin Live. These are all really good arms, you just have to see something in one of them that speaks to you more than the others. People like one or the other for their own personal reasons, which may have nothing to do with your needs. Find an analog dealer you want to develop a long-term relationship with (like Brian Berdan at Audio Elements in Pasadena, CA), and tell him what you're looking for, if you know. If you don't, start with your cartridge, and get an arm appropriate for it. The cartridge and the arm are a system, a team, just like the amp and the speaker, and the speaker and the room. Brian's an expert in analog, with customers all over the country. He carries great lines, and knows how to maximize their potential.


@chakster so the Victor tonearm is one of the most underrated and a giant modern arm killer?

Victor UA-7045 tonearm (and longer brother UA-7082 with higher mass) were the top of the line from Victor Laboratory, those arms comes with Victor TT-101 turntable (also with TT-801, 81). They are absolutely amazing and underrated for some reason, before trying anything expensive i’d buy UA-7045 in perfect working condition, it will be hard to find anything like that for under $750 (which is the actual cost of UA-7045 today, sometimes even cheaper). I’m pretty sure UA-7045 kills tonearms with typical price tag of $1500 and higher. For the best Victor cartridges like X-1, X-1II (MM) or for the MC-1, MC-10L ... this is the arm to try first! Just make sure the rubber that supports the counterweights is fine.

Also keep in mind that it was developed and produced by JVC / Victor Laboratory (the giant of the industry), not by someone from scratch at garage like many today’s arm of the higher price.
bdp24, I must ask about your comment "I disapprove of S-shaped arms".  What is your objection?

I would think once mass, rigidity, and construction quality are considered, whether the arm is straight, J, or S would not matter.  Issues such as bearing quality are I believe beyond the arm shape.  From those three criteria it seems one could have good or bad with any of the basic arm forms?
I don't have the Victor 7045 Chakster recommends, so can't comment on its other characteristics — but I want one, because it has a unique feature, rarely mentioned. It accepts the ubiquitous SME-type headshells (also called "universal"), but the coupling is quite different. Instead of just pulling on that little pin to tighten and secure the h'shell, Victor uses a collet — like a drill chuck. The grip is as secure as a rigid fixed headshell, without the inconvenience. I've never had a standard SME headshell/coupling that didn't exhibit some play, even on SME arms. With many I can even adjust azimuth merely by twisting the h'shell with my fingers, even when it's fully tightened — no need to use the azimuth-adjustment screws, there's that much free-play.

It's an intrinsic flaw in the original design. SME knew it and corrected it in newer models — the 309 headshell clamps rigidly onto the armtube, as does their "budget" M2.