Are we crazy?
Jun 1, 2003 at 4:43 AM Thread Starter Post #1 of 4

mirkot

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I was prompted to start this thread after few days of auditioning 40 years old headphone amplifier.

I recently acquired SHURE Solo-Phone amplifier through eBay and when it arrived I did not have much expectations. Unit looked very good, cursory check inside revealed that all parts are original (or at least very old). After overcoming initial small problem with selector switch, I was, well, lets say shocked, how the thing sounded.

I expected some level of noise, scratchy volume pot, no reproduction of low and high frequency extremes, etc. You know, it is 40 years old, at that time technology was not good as today (it is solid state amp) etc. But, what a surprise! This thing sounds quite lovely and attractive. Plenty of bass, smooth midrange, nice highs.

I was comparing it to X-Cans using X-supply (only other amp I had at hand). Headphones were Grado SR60 and Senn HD600, some custom interconnects and CEC cd player. Direct comparison showed lot of difference and you would say that X-Cans have more dynamics and control, and they would impress you more. But! That impression lasts only shortly. After couple of minutes you realize that SHURE is more pleasant overall and I spent rest of the evening using it instead. I did not have urge to stop listening after couple of CDs like I have with X-cans.

So, back to the title. Is it possible that after 40 years audio industry did not evolve much? I am not talking about digital domain or fancy materials for speakers. SHURE circuitry is so simple that even I can follow it. No sophisticated mains filtering, no separate power supply. Decades old condensers and funny looking power transistors. (Though it looks like it has some kind of crude crossfeed.) This is not resurrected low noise triodes but solid state in its dawn. I think that we are just spending large sums of money looking for solutions which are not coming. Are we only sophisticated consumers? Where are 40 years wasted?
confused.gif
 
Jun 1, 2003 at 4:58 AM Post #2 of 4
I guess that shows you how hard audio manufacturers try these days.
 
Jun 1, 2003 at 5:06 AM Post #3 of 4
I never thought I would end up with a single-ended triode amp as my reference. Circuit is what? 70 odd year old yet still can compete today shoulder to shoulder with amplifiers with the best of technology.

Eventually tho, I would imagin that sophisticated enough DSP function can simulate the same type of sound as this at better ergonomics with best efficiency.

Tripath based class T digital amplifers also are getting lot better, too.

Also, many solid state amplifers made in early to mid 70s still sound pretty decent. ( before Japanese companies cheaped out )

Look for some gems in garage sales. You'll be amased.
 
Jun 1, 2003 at 5:49 AM Post #4 of 4
One thing to consider is that older amps and receivers tend to have *much* better headphone outputs. So today's amps may sound much better (or not) driving speakers, but they usually sound pretty bad with headphones.
 

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