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connect my CD player to EAR 834P?

oolalajp

oolalajp

New Member
greetings,

i recently bought an EAR 834P tube phono stage.

is it possible to connect my CD player to the input where i've now got the turntable plugged in and see how it changes the sound of my CD player?

or would the input from the CD player be too much for the circuits in the 834P?

thanks in advance!
 
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Your phono stage sensitivity is way to high to plug in a CD player, I'm guessing. The phono stage is made to pick up very weak signals from magnetic phono cartridges; Input sensitivity for 1V output at 1kHz: 2.2mV (MM), 220µV (MC), per specs. A CD player, depending on type, will probably put out 1 volt or more RMS and completely overload the phono stage, I think, so your second conclusion is probably correct. CD's produce a line level output signal that is usually taken in through the AUX-type input.
 
Dave451 said:
Does that take care of the voltage issue as well?
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Yes. It attenuates the input by 40dB or 60dB (switchable). These things are pretty simple to construct, but they do require precision resistors and capacitors if you want accurate frequency response. The circuit in Hagerman's manual is one of several published designs.
 
Nixxuz said:
I would think the RIAA EQ would mess up the signal from the CD player quite a bit?
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It would, but inserting the inverse RIAA network fixes that. It converts the output of the CD player to equal the output from a magnetic phono cartridge. Inverse RIAA adapters are useful in the shop as well. They make it easy to check phono preamp frequency response and squarewave performance.
 
BinaryMike said:
It would, but inserting the inverse RIAA network fixes that. It converts the output of the CD player to equal the output from a magnetic phono cartridge. Inverse RIAA adapters are useful in the shop as well. They make it easy to check phono preamp frequency response and squarewave performance.
Click to expand...
Really? Damn, I might have to pick me up one of those. I was looking at getting another pre for everything non vinyl, but if I can use my EAR clone it would be great. Just an RCA switch for everything.
 
Thanks BinaryMike! I just ordered the iRIAA from Hagerman Labs. Saves me a bunch of money I was going to spend on a Marantz 7 knockoff, as I wanted that sweet 12AX7 sound. I've been using a Little Dot Mk2 that's going to have to find a new home now.
 
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