Can anyone help me with this Amp problem [noise(humming)]?

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Power Amp: Audio Research D125 Tube Amp
Pre Amp: Audio Research LS-15 Tube Amp
Speaker Cable: Purist
Interconnector: Transparent Music Plus

My Problem: When I power on my amp, there's no sound, just a increasing humming noise. Additionally, when we change the power amp, to a different amp; everything is fine.
Please let me know what's wrong with my set-up [amp] problem.

Thanks!

Sorry, if I'm not allowed to post this here. I need the help! Thanks again.

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I have a completely different viewpoint than that of Andrew Gilbert regarding Eliane Elias' new CD.

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For those of you who want an audiophile CD player without paying big $$

No stone was left unturned in striving to create a player that is superior in every way. Separate, shielded power supplies for the CD carriage, display, and digital and analog sections ensure noiseless operation. Using Analog Devices 1955 DAC, with 384k oversampling, and 1V rms (7V peak for extended dynamics), the ERC-1 will be your guide to rediscovering your CD collection and your love for music. Even the look of the ERC-1 will turn heads, with a sleek faceplate that features a halo-lit slot load mechanism.

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Mark Levinson No.38S preamplifier Specifications

Mark Levinson No.38S preamplifier Specifications

Even as Robert Harley was writing his <I>Stereophile</I> <A HREF="http://www.stereophile.com/solidpreamps/mark_levinson_no38_preamplifier…; of the $3995 Mark Levinson No.38 remote-controlled line preamplifier (it appeared in August '94, Vol.17 No.8, p.98), Madrigal Audio Laboratories announced an upgraded, cost-no-object version, the No.38S (footnote 1). At $6495, the 'S is significantly more expensive than the junior version; although it uses the same chassis, power supply, and circuit topology, it's in all other ways a different preamplifier.

Mark Levinson division of the Harman Consumer Group
1718 W. Mishawaka Road
Elkhart, IN 46517
(516) 594-0300
www.marklevinson.com

Mark Levinson No.38S preamplifier Measurements

Mark Levinson No.38S preamplifier Measurements

Even as Robert Harley was writing his <I>Stereophile</I> <A HREF="http://www.stereophile.com/solidpreamps/mark_levinson_no38_preamplifier…; of the $3995 Mark Levinson No.38 remote-controlled line preamplifier (it appeared in August '94, Vol.17 No.8, p.98), Madrigal Audio Laboratories announced an upgraded, cost-no-object version, the No.38S (footnote 1). At $6495, the 'S is significantly more expensive than the junior version; although it uses the same chassis, power supply, and circuit topology, it's in all other ways a different preamplifier.

Mark Levinson division of the Harman Consumer Group
1718 W. Mishawaka Road
Elkhart, IN 46517
(516) 594-0300
www.marklevinson.com
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