Biggest "bang for the buck" audio gear you have owned(in your history)?


This is very subjective, and your opinion on your own systems/items is all that really counts.

From the beginning to now, these would fit that category for me: (in no order)

Original Large Advents
Dahlquist DQ-10
Conrad Johnson ART pre.
Original Monster interconnects and speaker wires.
Nakamichi SR-3a
AR Turntable
ADC XLM II
Audio Research LS-12
Magnepan 1.6
Magnepan 20
Wireworld Gold Eclipse III
Audio Technica Electret Condenser headphones 
Magnum Dynalab Etude and 108 tuners
Magnum Dynalab Receiver (original)
And in those "early days" special pressings and imported Jazz albums. 

There may be others I am forgetting, but these were very good items along my journey. 





jusam

Kingko KA-101 Pro integrated amplifier. Never selling mine. Hard to find as others apparently feel the same way. For both high efficiency speakers and especially headphones.

Kingko KA-101 Pro Tube Integrated Amplifier

I also like the iFi audio Aurora all-in-one system.

iFi audio Aurora

Dyna 70 - $150

A pair of Dyna MK IIIs - $200

Altec Lansing 604Cs - $1500 pair

I still use the Altecs, 43 years.
The Dynas are back up for my Futtermans.

DSPeaker Anti-Mode 2.0 Dual Core room correction unit with additional digital equalization if/as required. For about $850 it was/is a game changer, removing all bass issues from the room and taming a few 'hot-spots' on the frequency spectrum.

I believe once one hears a properly (flat) equalized speaker in a room one will not want to 'bypass' the unit to hear the garbage it removed. Night and Day.  Some eschew this correction; I say enjoy your lumpy bass. My unit will never go back.

Odyssey Audio Kismet stereo amplifier recently replaced a good-sounding W4S STI-1000 integrated. I dropped from 570w to 160w (8 ohm) and the sound of my system was bettered so audibly as to be laughable. Increased pure tonal density, air/bloom, still more clarity, deeper bass, and greater micro-dynamics. I have never been happier with a used audio purchase, ever. Pure dumb luck (research).

I'm going to say my least expensive component,  my Sutherland KC Vibe phono stage makes me think what a great value it is every time I play a record.   It kicks a$$ for the money.    Dead quiet and sounds fantastic.    Textbook example of trickle down that doesn't sound entry level at all.