Solid State Power Amp Reviews

AVM Ovation MA8.2 monoblock power amplifier Associated Equipment

Sidebar 2: Associated Equipment

Digital Sources: dCS Paganini SACD/CD transport & Rossini DAC & Scarlatti clock; Oppo Digital BDP-93 NuForce Edition universal BD player; Apple MacBook Pro with Intel i7, SSD, 8GB RAM; external hard drives, USB sticks.
Power Amplifiers: Pass Labs XA200.8 monoblocks.
Loudspeakers: Wilson Audio Specialties Alexia.
Cables: Digital: AudioQuest Diamond (FireWire, Ethernet), Nordost Odin 1, Odin 2, & Valhalla 2 (USB). Interconnect: Nordost Odin 2. Speaker: Nordost Odin 2. AC: Nordost Odin 2.
Accessories: Grand Prix Monaco rack & amp stands, Apex feet; Nordost QB8, QX4, QK1 & QV2 AC power accessories; AudioQuest NRG Edison outlets; Stein Music Signature Harmonizers, Blue Suns/Diamonds, Speaker Matches, Super Naturals, and crystal Quantum Organizer; Synergistic Research Tranquility Base UEFs & Basik, Transporter & PowerCell; Bybee Room Neutralizers; Finite Elemente Cerapucs; Absolare Stabilians; Resolution Acoustics room treatment; Stillpoints Aperture panels.—Jason Victor Serinus

COMPANY INFO
AVM Audio Video Manufaktur GmbH
US distributor: AVM Audio USA
avmusa@avm-audio.com
www.avm.audio
ARTICLE CONTENTS

COMMENTS
mrkaic's picture
Submitted by mrkaic on March 30, 2017 - 7:51pm

John, what kind of load resistors do you use in testing? Obviously, they can take way more than 1kW per channel.

John Atkinson's picture
Submitted by John Atkinson on March 31, 2017 - 4:21am
mrkaic wrote:
John, what kind of load resistors do you use in testing?

For testing high-power amps I use an array of four non-inductively wound 8 ohm resistors, each with its own heatsink, mounted on an aluminum plate. They are connected in series-parallel to give a combined load of 8 ohms.

mrkaic wrote:
Obviously, they can take way more than 1kW per channel.

Only in the short term.

John Atkinson
Editor, Stereophile

Awsmone0's picture
Submitted by Awsmone0 on June 2, 2017 - 1:53am

Hi JA

In figure 8 there is an enharmonic peak at 180 hertz

Do you know what this is....power supply multiple ?

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