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Merrill Audio THOR Mono Block Amplifiers Review Print E-mail
Tuesday, 08 April 2014
Article Index
Merrill Audio THOR Mono Block Amplifiers Review
Set Up and Listening
Bonus Interview

The THORs superbly served the brand new release, Silver Rails, by the great Jack Bruce. It features his excellent bass playing, vocals, and unusual compositions. The album was beautifully recorded at Abbey Road studios. The THORs anchored Bruce’s bass guitar solidly to the groove, and allowed all the nicely finessed arrangements to retain their individual elements. I had this album on repeat.

Coming Home, the debut album by Danish songstress and pedal steel virtuoso Maggie Bjorklund, really took me by surprise and sounded amazingly pure through the THORs. Joined by Mark Lanegan on several cuts, and backed by Calexico, Bjorklund lays down sophisticated alt country and pastoral musical landscapes that the THORs unraveled perfectly. It was a pleasure to hear well-recorded, emotionally impactful music through amplifiers as good as the Merrill Audio THORS.

Merrill Audio THOR Mono Block


The Merrill Audio THOR mono blocks were among most engaging and sonically flawless power amplifiers I have had in my system to date. At $4000, they are the real deal, and come equipped with costly performance enhancements no manufacturer I know of is offering at this price point. The $12,000 Veritas monos get you more power, and perhaps improved dynamics, but for those with smaller spaces and reasonably efficient speakers, the THORs are just the ticket.

The THORs offer a clean window into the music and are completely free of mechanical or electronic artifacts. They are incredibly low noise, and this contributes to their rock solid imaging and sense of space. The Merrill THORs are a bargain for what they bring to the table. Special mention goes to the excellent ANAP cables provided by Merrill as well. I have no doubt they helped extract the very best performance out of the THORs.

These amplifiers are a must audition.

(Don't forget to CLICK HERE to read our Bonus Interview With Merrill Audio's Merrill Wettasinghe.)


Merrill Audio Thor Mono Amplifiers: $4000 (pair)

Power output:  200 wpc 8 ohms
Power: 200 Watts at 8 ohms
          400 Watts at 4 ohms
Input Impedance:   50 kOhms
Output Impedance: 20 milli Ohms
Damping factor:    500 4 ohms
THD:     0.05% at 100 watts
Current: 18 amps typical max
Frequency Response: 10Hz - 30kHz 0/-3db
Gain 26db
S/N 100dB
1 Balanced Input - Cardas XLR with Silver pins, Rhodium plate, Gold plated body
1 Remote Trigger. 12V for remote turn on/off
1 pair of patented Cardas Rhodium over billet Copper posts
1 IEC Furutech gold plated
1 Custom designed power cord for THOR by Triode Wire Labs, 12AWG high stranded copper wire, Cyro treated with red copper receptacles.
3 year transferable warranty
Short Circuit protection
Over temperature protection
Auto shut off in case of fault
Dimensions: 9” x 9” x 2.5” without footers
Weight: 15 lbs/pair

Review System 1

CD Transport: Marantz SA-14S1 SACD player
Server: Squeezebox Touch
DAC/Server:  SIM Neo 308D
Headphone Amp: Pro-Ject Head Box II
Headphones: Grado SR60
Preamp: Channel Islands Audio PLC-1 MkII
Amplifier: Audio Research  VS 55. Bob Carver Black Magic
Speaker: Thiel CS2.4
Cables:  Stager Silver Solids, Darwin Ascension (IC), Transparent  MM2 Super (IC), Transparent Plus (Speaker) Acoustic Zen Tsunami II (AC),Transparent (AC).Shunyata Venom (AC) Element Cable Red Storm (Digital AC), DH Labs TosLink, DH Labs AES/EBU, Audioquest, Forest, WireWorld Ultraviolet, DH Labs USB(USB) DH Labs (USB)
Accessories: Symposium Rollerblocks, Shakti Stone, Audience Adept Response aR6 power conditioner, Salamander rack

Review System 2

CD Player: Marantz CD5003
Music Server: Squeezebox Touch via Ethernet to
MAC Mini w/ Western Digital & Seagate external drives.
DAC: Musical Fidelity A90, CLONES Audio Sheva DAC, Denon DA-300USB
Integrated Amplifier: McIntosh  MA6600, Plinius Hautonga
Tape Deck: Revox A77
Speaker: Harbeth Compact 7ES3, KEF R700
Cables: Darwin Cables Silver IC, Kimber Hero HB,  DH Labs White Lightning (IC),QED Transparent MusicWave (Speaker),PS Audio (AC), Mojo Audio (AC), DH Labs TosLink, Audioquest Forest USB, Wireworld Ultraviolet USB
Accessories:Cable Pro Noisetrapper, Sound Anchors Stands, Wiremold, KECES XPS


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