What's your "diminishing returns" preamp choice?


What preamp would you consider is at the point of diminishing returns for you? I realize this is a vague and subjective question, but I think it will be interesting to hear the answers.

Of course, a $10,000 preamp will (probably) sound better than a $1,000 preamp but everyone has a different point at which they feel they have spent enough money. In some cases, one may feel that there isn't a significant difference between a $2k piece and a $10k piece to justify such a purchase.

I've noticed that there are some gems in the audio world that defy their price point. For instance, Apogee Centaurs, Halfer 9505 etc. I've always found such pieces fascinating.
woofer72
The biggest surprise was when I tried the Tortuga preamp. It has bettered both an Audio Research REF-3 and a Constellation preamp. It uses light dependent resistors for attenuation and has software controlled auto calibration to eliminate impedance drift over time. Most surprising is that it has the best bass performance that I've heard in a preamp. By the way, it also has user selectable input impedance which allows the user to optimize performance of the source device. The balanced version I have is $1800.
I went with REF5se thinking the cost vs performance trade to the Aniv model to be beyond prudent...would probably still make that decision..the REF 10..same thinking...listening, hearing...for me anyway...I guess I lean to upper mid Giant killers...
In fact passives are usually better if they are full up, as there is less shunt resistance to ground, so the source (if a weak tube output) sees an even easier load, which equals better dynamics for them.

Passives sound just the same down low as they do up high, so long as the source is not a weak high impedance tube output stage >1kohm

These two contradict, both written by you. So which is it?

My experience mirrors the former rather than the latter (we used to build a passive years ago and continue to test them); all (and I do mean all) weaken the bass as you turn it down from full. For our testing we used a CDP with a solid state output; it is by no means 'weak'.

Some of this of course depends on the source- for example if an output coupling cap is involved (which it almost always is). But its all moot if you have a preamp as it buffers the input from the output cable.

Both! You can't see the forest through the trees?

These are both in reference to a source with a weak tube output stage, geeeeish!!

And don't even come into play if the source has a good low solid state output impedance.

Cheers George
07-15-15: Zd542
I buy audio components for the status they place me in the audiophile community. For me, the law of diminishing returns runs backwards. The more I spend, the better the value.
and you forgot to write that we respect you more & more when we know how many $$$$$$ you have spent on audio gear....... ;-)

image is everything!