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Hi Jerry,

I'm having some trouble diagnosing the sound issue I'm having with my record player's audio output.

My record player has white and red cables that I have running to a Sony amplifier model no str-de197 amplifier. The amplifier has a "Phones" input which fits a guitar cable shaped adapter which allows me to plug in headphones or speakers.

I get sound, and it's decent for some songs, but on others certain sounds are barely discernible. For instance, I'll play a song that I know the guitar should be louder on, and it will be quiet. Or maybe the voice is lower on another song.

I messed with the balance settings, and nothing seemed to work.

My hunch is that the adapter I'm using is not ideal for what I'm trying to do.

I also could go get speakers that have speaker wire (the red and red/black) to go straight into the amplifier if you think that would work.


Hi Toshy,
Good news and bad news but the bad news is not that expensive.
You amp has no provision for a record player audio input or a ground terminal for it. The 'phones' input is for headphones.
You need one of these phono preamps.
They start around 25.00 but I suggest the TCC TC-750 at <$50.00 due to its signal to noise ratio.

Thanks for using AllExperts and let me know if you need any further advice.

Jerry Mael

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Jerry Mael


My forte is audio.. Car/Home/Boat. You name it, I will help you even if it is just a link to more assistance. If you want to interface new gear to your factory radio I can do us both a favor and tell you to go to or call them at 1.800.555.7088. They really are top notch at doing that for people with great support. I will re-direct most questions of that nature to them. The rest of it... I am eager to help you with. I am also not a 'Master Installation Technician' that will tell you I cannot assist you with cars not made in the USA. Talk to me about any audio upgrades including 'bang for the buck'.
Specialties include: Overall Acoustics, Gain structure/settings and Enclosure design, system design/consultation, when/where to get which upgrades as well as other pertinent info for the mobile audio enthusiast and much more.
I also am NOT interested in buying your used gear so do not waste our time asking me.


My specialty as it is offered here, is Mobile and Home Audio Consultation.
Eight years IASCA - Pro 251-500 watt class
With Allexperts since 1999 (on and off).
35 years of overall professional sound and acoustical/electronic experience (since 1977) including: Sound Offs, Home audio, Mobile audio, Live sound, Churches, Theater, Live DJ and Studio Recording (analog and digital software and hardware), Effects, Looping, analog/digital mutli-track and mixdown . My mother was a record producer so I picked up a lot of additional professional knowledge and experience through the years. I was a Drum Tech for the Banshee reunion tour and toured as sound man with a regional act called Champion so I have practical knowledge for many aspects of audio.

If I cannot directly answer your question I will use my vast resource network to help you get a usable answer.

Favorite Mobile components:
Any amplifier based on ZED principles. Examples are Diamond, Zapco, Hifonics, Autotek, ect. And of course, Nakamichi (yes, still in business)
McCaulley, Polk and Dynaudio Speakers.
Clarion/Nakamichi headunits and processors.

>35 years of real world, audio experience.

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