If I just use a DAC, do I need a Pre-amp?

Part II is I think the  Fisher 400CX 2 might hold its value over time.  So I might loose cost of money, where a modern just-as-good or better preamp would likely loose a lot of value in the near term.

The fear of missing out.  This is a hobby, so if there is some sonic thing that a pre gives me that my music player on my PC or my digital player won't, I'd like to know.   

The Fisher is being refurbished.  I have 1st right of refusal.   I do not need volume control.  The Fiio M15 has a nice volume knob and my Audiovana player and both DACs have filters/mini EQs.  

So I think I am missing nothing.  Except I think the 400CX 2 is beautiful - but that is no reason enough to buy it.  

Clearly, I will need to hear it first, and that is tonight's plan.  Both DACs on the Fisher SA-100 (I have other Amps and don't use a pre-amp).

I hooked my Fiio M15 up to the Fisher SA-100 and a pair of Altec 604B Hollywood's.  It was beautiful.  The buddy pushing the 400Cx-2 was not thinking there would be an improvement.  That is going in for a total refurb.  So we will A/B in a month.  But it sounds great as is.

The SA-100 has no volume control, so it is all via the DAC and works great.  

One DAC, has an analog potentiometer, the other from the software player.

These are the specs of the DAC I plan to use.  https://www.fiio.com/m15

As posted above - tried and liked already.  I may try a pre-amp in a month to see if I like the sound color.  Mainly because as a vintage one, I expect I can sell it for what I paid and then some.  I would not buy a new pre-amp even if "better" as I'm more likely to not get my money out of it.

" I strongly recommend the addition of SONORE's systemOptique to convert Etherent signal to optical, as it drops the noise carried on Ethernet. Striking change, improvement. See my article about it at Dagogo.com"
From Dagogo article:
"For Dagogo readers still spinning discs or streaming audio through a Mac Mini or similar, this article is for you. "

Which really isn't me.  The primary DAC referenced above is really a DAP.  I am not streaming for this application, rather play downloaded files.  I may look at this for the Qutest where I do sometimes stream.  

@phantom_av " Pre-amp is the heart of your Audio System every device is connected it to except the Speaker."

For me "every device" is one device. 
For this thread it is a DAP (no stream) 256 and 512 DSD player on the device to the Amp or DAP->pre->Amp.  
-I have an analog volume 
-I have filters (EQ)

I will wait for my free test.  If someone offers a money back test, I may test, but I expect they will get their device back. 
I'm a bit more confident now than in the OP as I had not tested then.  Now having hooked it up to some guys amps that insisted I need a pre-amp and now they don't.  He said come back in a month and try.

My setup/s are very simple.  They are also in different places.  It may be wrong, but I have a source/amp/speaker setup. 

I switch setups, not components.  So far, there are no pre-amps.

The source determines the DAC and amp and speakers.  
Examples...
(this OP) Fiio M15 player local data ->Fisher SA-100->Klipsh Heresy

Then other stuff:
Windows 10 Audiovana Player ASIO driver to Chord Qutest -> 300B SET -> Chartwell

As above to HH Scott -> Watkins Gen 4

Same DAP-> http://www.erhard-audio.com/Elvis.html ->Maggies
(another state)

The only time I might switch source on the same amp is on the Scott for a TT.  I have about 8 records.  Everything else the source is matched to the amp and the amp to the speakers.