Sek Loso

In the YouTube video "Concert TV5 - LOSO Entertainment 1" by LoSoFC Channel, Sek Loso can be seen using a Mesa/Boogie Dual Rectifier Solo Head (Multi-watt) amplifier during his performance. Despite the video's slight blurriness, the distinctive design of the amplifier is recognizable on stage.

In the YouTube video titled "28 YRS LOSO CONCERT: 14 อีกครั้ง - SEK LOSO," posted by the channel "LOSO x LUSTER Entertainment," Sek Loso can be seen using a Marshall JMP-1 pre-amplifier, visible on the left side behind him at 0:12 in the video.

In this video, you can clearly see a Marshall JCM 800 Head behind him.

In this picture, right behind the band, you can see a Wall of Marshall Stack with 4x12" Marshall Cabinets.

During the 1997 "Rock On Earth Project 2" Concert, Sek is also seen using a Mesa Boogie Badlander Head along with a 4x12" Mesa Boogie Rectifier Cab in addition to his JCM 800 Marshall Amp.

During the 1997 "Rock On Earth Project 2" Concert, Sek is also seen using a Mesa Boogie Badlander Head along with a 4x12" Mesa Boogie Cab in addition to his JCM 800 Marshall Amp.

During Sek Loso's 2011 tour in Los Angeles, he has used a Marshall JCM 2000 TSL 100W Amp as we can see in this video.

Sek Loso also used a Marshall 4x12" Straight Cab during his 2011 Los Angeles Live.

We can see a Mesa Boogie 4x12" Slanted Cab during this 2020 Songtopia Livehouse gig.

Sek has used a Fender 1965 Twin Reverb amp for his Acoustic Guitar on this show's gig as we can see on the video.

Sek is using a JCM 900 Amp Head during this gig as shown in the video.

Sek Loso is using a Marshall JVM410H Head during this gig in Malaysia (circa 2013).

In this rehearsal, Sek Loso is playing a white Gibson SG with a Small Orange Combo Amp in the background (likely a 15W Orange Crush due to it's small size)

Pretty sure it's a Fender Bassbreaker underneath the Orange Amp as we can see in this recent rehearsal video.

Sek Loso uses a Fender Blues Junior III or IV as a practice/rehearsal amp as seen in this picture.

In this video we can see behind Sek, two sets of either Plexi or JTM45 Amp Heads.

In the YouTube video titled "28 YRS LOSO CONCERT: 14 อีกครั้ง - SEK LOSO," posted by the channel "LOSO x LUSTER Entertainment," Sek Loso can be seen using a Marshall JVM210H 100-Watt Tube Amplifier Head, visible on the right side behind him at 0:12 in the video.

In a Facebook post, Sek Loso discusses his rig and confirms the use of the Mesa/Boogie 2x12 Vertical Slanted Cab.