Berrier Audio Works

Berrier Audio Works Berrier Audio Works is a full service repair and mod shop for guitar and bass amps. DM for a repair quote or to make an appointment!
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At Berrier AudioWorks, we strive to provide the best possible recording for your hard earned dollar. As musicians ourselves, we understand the reward of having your musical vision come to life. It is our goal to capture your best performances and sounds, and get them all to fit together just like it does in your head (maybe even better). Our hope is that the recording process will fade into the ba

ckground, so you can concentrate on giving the performance your project deserves. Besides full production, we also offer tracking and reamping services. We are fully equipped to help out DIY bands that just need somewhere to track drums and reamp guitars with quality mics, preamps, and converters. Our studio is comfortable and spacious, but retains an intimate studio vibe. We have three tracking rooms including a drum room, a diamond shaped live room and a spacious vocal booth. All rooms are visible from the control room through double paned glass and are acoustically isolated from each other. We also have a lounge area for the musicians and offer free WiFi. Contact us today so that we can help you make your mark on the music industry and create your legacy for generations to come to hear! Gear that we use:

Mics:
Audio Technica 4050
Audio Technica 4047
Audio Technica 4040 x2
Audio Technica 4033
Audio Technica AT2010 x3
Electro Voice RE320
Sennheiser MD421 x2
Sennheiser E604
Shure Beta 58A x2
Shure Beta 57A
Shure SM57 x2
Shure Beta 52A x2
Audix D6
AKG D112

Hardware:
Mac Pro
Presonus StudioLive 32.4.2 AI Console
Presonus Eureka Modded x2
Avid Eleven Rack
Alesis DM5 and Swiss made Ddrum Triggers
Presonus HP60 (6 Independent headphone mixes while tracking)
Yamaha HS80M Monitors
Yamaha HS50M Monitors

Software:
Logic Pro X
Presonus Studio One 2.6 Pro
Waves Horizon
Many other plugins

Amps:
Mesa Mark V Head
Mesa Dual Rec Roadster Head
Mesa Stiletto Deuce Head
Peavey Classic 50 Head
EVH 5150 III 50w Head
Peavey 5150 Block Letter head
Ampeg 1959 R12 Rocket combo
Mesa Bass 400+ Head

Cabs:
Mesa Standard (OS) 412 x2
Mesa Traditional 412
Mesa Rectifier 212
Mesa Widebody Open 112
Mesa Roadster 112
Marshall 1960BV 412
Peavey 410E
Mesa 1516 Bass
Ampeg 1540 Bass

Drums:
Crush E3 Sublime Maple 4pc
Gretch Catalina Birch 4pc

Snares:
Ludwig Black Magic 14x8
Ddrum Ash 14x6.5
Crush E3 Maple 14x6
Legend Maple 13x7

06/02/2026

Marshall JCM 2000 Reborn!

This JCM 2000 DSL50 had been sitting in a rehearsal room after being put away because the circuit board had gone conductive and it was eating power tubes.

If you’ve ever owned one of these amps you know the reputation. The circuit board goes conductive over time because of heat cycling and carbonizing. Generally, a little conductivity doesn’t cause too many problems. In the case of the JCM 2000, it causes big problems because of how close the high voltage traces are to the grid pins of the power tube. The voltage leaks onto the grids and causes the bias to run away (destroying the power tubes in the process).

If the board isn’t entirely cooked, modifications can be made to get the HV off of the grid pins. Just doing this generally stabilizes the amp.

In the case of this one, we also did some circuit tweaks to make the gain more usable and make the amp feel less stiff.

This one came out great. I love putting these amps back on the road!

05/30/2026

1992 Mesa Dual Rec REV D!!

This amp came in after going down over 10 years ago with an arcing power tube. Because the amp had sat for so long it had some problems that needed to be dealt with.

Upon initial inspection, a previous tech had replaced a blown MOV bud didn’t clean up the mess it left behind. Carbon is conductive so the power board got removed and cleaned up.

The filter caps dated back to 1990 so they were long overdue for a change. These blue atom caps are notorious for drying out after long periods of dormancy. Also the low voltage supply caps get worked pretty hard in these amps so they had to go too. The board is out, so let’s hit the bias supply too.

Next, all the carbon comp resistors on the boards and the screen supply get replaced with metal film or metal oxide low tolerance parts for stability.

Lastly, all the boards, controls, and connectors get a thorough cleaning and final inspection.

After a new set of tubes and burning in, this is one of the best sounding Dual Recs I’ve ever played. This revision has a lot in common with the famed REV C (including the turd of a clean channel), and it IS the sound you hear in your head when you think Dual Rectifier.

05/23/2026

1967 Fender Super Reverb! There is a story behind every vintage amp. This one came to my customer after a GC purchased 70’s Pro-Reverb went up in smoke on a gig. GC made it right and traded him even for this beautiful 67 Super. His request was to make this a reliable gigging amp.

Upon initial inspection it was obvious several techs had already been inside this amp. The power supply recap was done well and recently so that was left alone. There were several patch up repairs that had been done over the years that needed to be done properly. The tremolo circuit was hacked together and ticking badly. Also, almost all of the original carbon comp resistors had drifted well outside of their tolerance range. On top of that, there was dc present on the eyelet board around a few of the coupling and tone caps causing scratchy pots.

We decided to depopulate the board, soak and clean it with IPA and replace all the old work and carbon comp resistors with high quality metal film resistors for lower noise. All of the blue molded caps that were left went back on the board(they were still good), and any missing ones were replaced with Panasonics. We also updated the tremolo circuit to slow it down. With a new LDR and lead dress, the ticking disappeared.

I also did my standard rectifier protection, grid stopper update, and screen resistor upgrade. Most of these changes are sonically invisible, but make a big difference in the playability and tube longevity.

All in all, this is one of the best examples of an AB763 Super Reverb that I have ever heard!

05/14/2026

Carvin 1984 X-100B

This amp came in with no output after sitting in a barn for a decade. Upon further inspection the first dropper in the power supply was blown open and the filter caps were starting to bulge.

Given its age we decided to do a full service that included all new electrolytic caps, new power supply node resistors (where necessary), and a couple of new output tubes (2 had red-plated in the past).

Along with this all the pots, jacks, and switches got a thorough cleaning and this amp rips! The clean channel is pristine, and the dirt has a very vocal singing sustain.

05/09/2026

Ampeg SVT Classic USA!

This came in with the fault light flashing and would not come out of standby. This is a good thing. The protection circuit detects tube faults and shuts down the power amp to prevent catastrophic failure.

In the case of this amp, it was a bad tube that triggered the fault indicator. The tube in question took out it’s screen resistor. Some argue that Ampeg designed the power amp to use these screen resistors as fuses. In my experience, the protection circuit works just fine for this duty. It detects overcurrent on any tube and shuts down the power amp.

With this in mind, I normally move the screen resistors up in value to 1k 5 watt resistors. This does two things for the power amp. One-if there’s a tube fault it doesn’t eat the screen resistor. Two-it balances the screen current a little bit better between the tubes.

The protection circuit does its job and shuts the amp down and now you just have to change the tubes instead of pulling all the boards out.

05/06/2026

Mesa Nomad 45 combo!

The customer purchased this amp used and said the reverb had never worked for them. It probably never worked at all. I discovered a missing ground reference for the low-voltage supply that literally smoked out the zener diodes and the opamps in the +/- 15v section.

This amp is from the early 2000s and since the board had to come out, it was time for a full service. All the electrolytics got replaced with high-quality components. The opamps were socketed and replaced and the ground reference was restored. The zeners were updated to 5 watt parts.

After all was said and done, this thing sounds killer and you can get Cretan cleans to dual rec dirt from this amp. I dig it.

05/04/2026

4 Gain Stage MOD Marshall 2204!

This amp had been modded in the past and the current owner purchased it from Guitar Center after “being put back to stock.” It was not quite stock, and several of the signal caps were burned down to the foil by some haphazard tech work.

The customer requested a mod to get it more in line with a Bogner Snorkler. I like the Snorkler, but the low end leaves something to be desired. I decided to just shoot for the moon with a 4 gain stage mod that had all the chewiness of the Snorkler with a tight thick bottom end.

Nailed it.

This thing sounds massive with all the singing sustain and palm heavy chuck you could ever want. Even with all that gain, it still cleans up real nice with the volume control.

I love modding amps…

05/03/2026

Mesa Mark V:25

The amp came in with no lights on the dash. The low voltage supply had crapped out and none of the switching or lights were operational.

After an inspection I discovered a shorted tantalum cap on the output of the voltage regulator that had taken down the 12v supply.

Being a mesa, everything has to come out to change components on the board (and even had to remove some parts that are stacked in the way).

I installed a higher spec cap and a new regulator and we’re back in business!

Dm for repair/mod inquiries.

05/02/2026

Marshall JVM 205H!

This amp came in with low output and erratic switching, and no use of midi or the foot controller.

Ultimately, it came down to being a bad micro controller chip, and a bad expander for the digital switching on the front panel. The micro controller in these amps controls midi, foot switch, and front panel switching all at the same time. The good news is Marshall still makes these amps so parts are readily available and we were able to get it back up and running in short order.

This one also came in with a choke installed in properly so we got that sorted out and the amp sounds incredible!

For anyone putting a choke in these amps, make sure it’s done the way that you see in the video. I have seen quite a few of these amps come through with a choke installed this way and it makes me think there is some forum post out there telling people to do it the wrong way.

04/19/2026

Sunn SONARO! This late 60s amp needed a full servicing because it had remained untouched since the day it rolled off the factory floor. Safety standards have changed so the power supply had to be updated to accommodate. I rebuilt the power supply with modern radio caps to handle the excessive B+ voltage in this amp. Even though the amp is rated at 40 W, after the servicing, it was producing 80 W clean!

Address

490 Guy Rd
Johnston County, NC
27520

Telephone

+19196280451

Website

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