Are There Alternatives to the Marantz 10 B ?

Goofyfoot, like many of the tube tuners that came a bit later (ca. 1960) the REL Precedent (ca. 1954) is mono in itself but provides a multiplex output jack which can be connected to an external multiplex adapter component. The combo comprises a stereo tuner. As you probably realize, the Scott 310D I mentioned is similar in that respect.

IME with the particular examples I've had, the Precedent + MPX-100 or LM-35 (I've had both) and the two 10B's were very similar in terms of weak signal reception capability, and significantly better in that respect than any other tuners I've ever had. In terms of sound quality, the Precedent + MPX-100 or LM-35 clearly bested both 10B's, although condition could certainly have been a factor in that.

BTW, when I said I suspected that the cost of a 310D + MPX-100 or LM35 or 335 would be less than $500, my guess is that the multiplex adapter would be about 60% of that total, and the tuner about 40%.

Good luck in your search! Regards,
-- Al

Thanks again Al for better clarifying. It's a blessing to have this network of knowledge right at my fingertips. Is there a link or a PDF file, etc... that can explain the Multiplex Adapter and how to apply it? My knowledge of tuners is slightly better than knowing how to turn them off and on.

Goofyfoot, here is a simple diagram for Scott 335 Connections.

Thanks, Tony (TLS49). Also, a photo of the MPX-100 can be seen here, and of the Scott LM-35 or 335 here (the unmarked photo above the model number listings). The LM-35 and 335 are the same except that the LM-35 came as a kit, and I believe the color of the faceplates is different.

I couldn't find a user manual for either model, but as the diagram Tony provided indicates you simply connect the MPX (multiplex) output of the tuner to the MPX input of the Multiplex Adapter, and the Left and Right outputs of the Multiplex Adapter to your preamp, all via RCA cables. The front panel controls are simple and pretty much self-explanatory.

Vintage tube tuners from that era that are mono but have a mpx output tend to sell these days for much lower prices than comparable stereo models, so even though a mpx adapter in excellent condition may sell for $250 to $300 or more, combining an MPX-100 or LM-35/335 with a mono tuner can often get you as good or better quality for significantly less money than investing in a stereo tube tuner.

Regards,
-- Al

I'm wondering then, would the multiplex adapter apply to the McIntosh MR 65 and if so, would the HH Scott and the McIntosh be of equal quality even though their sonic characteristics might possibly be different?

I'm thinking however that the 310 D would be less expensive than the MR 65.

I saw a McIntosh MA 6 multiplex adapter for $500.00 on the Audio Classics website. My assumption is that any multiplex adapter would be compatible with any mono tube tuner that accepts a multiplex adapter?

This is great, I'm learning things that I had no knowledge or familiarity with, thanks!