Upper Level Vintage DD Strenghts and Weaknesses

A Platter Mat is a interface on a TT.
It will produce different outcomes to a presentation in differing environments.
It is also part of the Construction Tiers, if an individual is looking to use Sub Plinths and Footers along with other materials to give the Stylus > Tonearm an environment that is able to create a Sound that is unique to the producer of the construction methods and their preferences for a particular presentaion.

One Individuals ’Can’t Live Without Mat’ will more than likely be
Three other Individuals ’Hot Poker End’ and trying to them to touch it more than once will be fun.

Additionally the Person who is sharing their experiences and their preferences for a particular mat type,
they are 'Wed To' , also is 'Wed To' another Footer, which is to be used in place of the Manufacturers orignal selection for a design.
I will assume when these 'Wed To' methods of support are used within the Individuals listening space a presentation is achieved that offers a much enjoyed satisfaction.

An individual that is making a Vinyl Source their main source for music replays and is willing to a spend time listening to TT’s they have placed onto a Short List, and if possible listen to them in a created environment for the setting up of the TT.
That allows a presentation to be produced that suits the listeners unique preferences, will ensure they are having a great time.
If a selecton of construction materials are available to be trialed for the TT Support, the trying out of various permutations of materials being used under the Stylus, might just change ones perception of a TT’s capabilities.
Especially if a not so popular choice of model, that is quite different from the regularly made known choices,
proves to be capable of thoroughly impressing.

Following finding such a discovery of what is a impressive TT and what is proving satisfying as a supporting method.
Then a play with, Stylus Weight, VTA and even using the different equations for the Maximum - Minimum Radius Setting Up Protractor methods that are commonly referred to, might just bring the whole arrangement to a place, that is percieved for the for the better, and much more than at any time had been imagined.

So how can Denon have proper engineering in all aspects and then not do the mat right? Seem to be contradicting yourself here.

Where you’ve been in the 70’s ? Look at the cables, speaker terminals whatever when you got vintage equipment.. Over 40 years it wasn’t so important, rubber mat was a standard mat by default from many manufacturers including top Denon, Victor and Technics. Stock feet under those plinth for Denon, Victor, Technics is garbage. But even in the 70’s some manufacturers made separate mats, feet etc or upgrade for those who willing to spend more. DP-80 platter is has its unique structure, you can search audiogon, heavy mats are not recommended for this particular platter structure. 

Where you’ve been in the 70’s?

Well in the 70s I was between the age of 4 and 14

Agree 100% with everything that Elliott said. I have the same plinth with a TT71 motor drive, Victor 7045 tonearm and a Audio Technica ATP-12T tonearm in the rear position. It's a dream to use.For belt drive I recently received a Acoustic Solid, Solid Edition TT with a Audio Oragami PU7 tonearm, still setting that beast up and for a long term project I'm rebuilding a Russco Studio Pro Model B idler drive, tonearm to be determined.

BillWojo

all you need is AT-616 Pneumatic insulators

There are currently modern feet that do the job exceptionally and cost less than an old and rare set of AT 616
They are called Gaia Isoacoustics.