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To preamp or not to preamp. That is the question.

I have recently set up a second system from some previously owned components which I though I would use for occasional listening as I have a better rig in a dedicated music room. Yet I find I'm listening to it more than expected and want to optimize it.

I use only a single source, a Bluesound Node 2i, feeding directly into a Forte 4a Class A power amp and some Totem Model one signatures speakers. No preamp! Controlling the volume with the BlueOS app, the system plays loud enough for my listening needs but I know the output of the Node is on the low side for the power amp. I'm not looking to upgrade the current speakers, amp or streamer. Other than having more gain, would adding an active preamp bring anything to the table other than more expense and additional "stuff" in the audio chain. What has been the experience of other members been who have gone this route?

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kota1
2,706 posts
 

If you can get a preamp with room correction that would be a plus.

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lordmelton's avatar
lordmelton
877 posts
 

There are basically 4 different kinds of preamps.

1. A pot in a box, it can be just a line level resistive rheostat or more favourably, stepped resistors. Totally passive, no mains power.

2. Line level preamp. No gain but a more sophisticated version of the above, using mains input for various functions.

3. Digital preamp, digital volume control. Volume is controlled by manipulating the digital signal in the digital domain. Degrades sound quality by stripping bits.

4. Active preamp. This preamp, whether solid state or tube will add space, resolution, soundstaging, imaging etc. to your system. Unfortunately they are quite expensive. Usually $15k and above.

Only an active preamp is capable of synergising your system, everything else is a poor compromise. 

thegm's avatar
thegm
24 posts
 

While I agree with the previous post about the types of preamps that exist, I don't think the $15K price point for No. 4 is necessary.

I have built tube preamps and bought tube preamps and I have rarely spent more than $6K. Particularly, if you search through the quality Used market. A well-made tube preamp should last for many years. Tubes can be rolled/upgraded at will.

In fact, I currently have a PrimaLuna Dialogue Premium tube preamp that was less than $3K. Tube rolled in some NOS Mullard 12AU7's and pushing an NAD M23 SS amplifier. Truly a wonderful sounding system, with a wide soundstage, a bit of warmth, with the minimal distortion and solid punch of the NAD. 

elliottbnewcombjr
5,320 posts
 

to keep it simple, same number of pieces, perhaps change to an integrated amp (includes preamp) with remote volume and any other desireable features.

you keep the existing amp available for ... or sell it.

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