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Mark Levinson No 27.5 Stereo Power Amplifier (Used) SOLD

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Mark Levinson No 27.5 Stereo Power Amplifier (Used) SOLD

Post by KhimAudio on Mon Mar 12, 2018 2:32 pm






Mark Levinson 27.5 Stereo Power Amplifier.

Legendary amplifier from the mid 90's from Mark Levinson, one of the best 
solid-state amplifier. 
Great working condition, beautiful sound, good details, and clearly definition.
Timing on all types of music is superb with good layering.

Specification: 

-  Power output:  100 Watts/ch into 8 ohms
                        200 Watts/ch into 4 ohms
-  Inputs:  RCA and Balanced XLR

-  Voltage:  230V

Condition:  8/10

Asking:  RM Sold

Interested pls call/whatsapp:  Khim 016-3662081

Location:  Puchong


Last edited by KhimAudio on Sun Mar 18, 2018 10:26 am; edited 1 time in total (Reason for editing : Item sold. Thank you very much hifi4sale.)

KhimAudio
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Dealer\Reseller\Trader\Service Provider

Number of posts : 1401
Age : 44
Location : Puchong
Registration date : 2014-02-11

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Re: Mark Levinson No 27.5 Stereo Power Amplifier (Used) SOLD

Post by Anwar on Mon Mar 12, 2018 5:26 pm

I am posting this message due to safety concerns.  This unit is actually 220 V version if you check the operating manual. 220 V countries include Hong Kong.  Malaysia is a 230 V country but the actual supply is typically around 240 V.

The AC supply coming to our house can be higher than 240 V since the upper limit for 230 V countries is 253 V.
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Anwar
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Number of posts : 99
Age : 52
Location : Bukit Jambul, Penang
Registration date : 2011-01-08

Character sheet
Source(s): Ayon CD-07, Oppo UHD-205, TW Raven Two + TW 10.5 with Benz LP-S, Audio Research REF Phono 2SE
Amplification: Bent Audio silver slagleformer preamp, Bryston 10B-SUB, McIntosh MC452 for front, MC303 for center and rear
Speakers: Focal Diablo Utopia 3 for LCR, Focal IW 1002 Be for rear, 2 x JL Audio Fathom f113 subs

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Re: Mark Levinson No 27.5 Stereo Power Amplifier (Used) SOLD

Post by wahlauyeh on Mon Mar 12, 2018 10:35 pm

Assuming Vin Ac= 233vac ~ 253Vac (primary winding)
most transformer for power amp has 
1:4 (most cases) . for every 20Vac increase at our mains ,there see only 5Vac increase on secondary transformer winding of this amp.

Most linear power supply smoothing caps in the power amp have considered 30% safe margin in their design.therefore additional of 20vac increase does not doing any harm. infact higher incoming voltage may give you >100W into 8ohms.

may be additional ~2.5watt gained assuming P=IV assuming I is constant.
for every 10% increase increase of Vac, secondary see 2.5%.
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wahlauyeh
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Number of posts : 82
Age : 46
Location : taman bayu
Registration date : 2012-11-09

Character sheet
Source(s): Pioneer
Amplification: Sony
Speakers: Technic

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