Rectifier: solid-state or tube (short protected)
EL34,KT66,6L6GC,5881,EL37,6550,6V6 or EL84
20-100W class AB (optional class A/AB switch)
external bias & balance adjust with meter points
Preamp tubes: 5751,12AX7,12DW7,12AT7
external preamp bias adjust for input tube
Parallel FX Loop or 'True bypass' Reverb
'True bypass' Master Volume
Vitamin Q Paper/oil capacitors
Allen Bradley carbon composition resistors
brushed mil spec chromed steel chassis
Available as 2x12 Combo, Head & cabinet
Handmade in USA
click pictures for enlarged view
The unique cabinet design of the Midnight Blues Combo allows the tubes to remain upright,
promoting longer life and reliability.|
Complete separation of head and speaker sections prevents unwanted feedback between the two and also enables the player to choose between open-back and closed-back cabinet use.
The 'intelligent' power supply is short-protected and accepts a variety of rectifier tubes.
A special plug activates the solid-state rectifier with additional filtering, which enables a tighter sound and higher output power.
The output section accepts a pair of KT66, EL34, 5881, 6L6GC, EL37, 6550 and 6V6 output tubes. A tube selector switch tunes the output transformer to get ideal response.
The custom made zero-compromise transformer has an incredible rich and complex tone, with perfect symmetry producing even-order harmonic break-up.
A 16 ohm only output with Class A/AB switch instead of an 8/16 ohm selector gives even further enhanced frequency range and headroom not found in conventional and even high-end guitar amplifiers.
Power Supply & Watts
This amplifier is available in two output power versions: NORMAL 30-45 Watt or HIGH 45-60 Watt
Also available with High, Normal or Low (25 Watt) power switches.
Lower power creates a soft, warm and relaxed vintage bloom and earlier break-up. Higher power gives a tighter, punchier response with more power and headroom.
Also available with 100 Watt transformers and a pair of KT120.
The preamp of the Midnight Blues is available in two versions:
Low-impedance Parallel FX loop (can be used as a dual-channel preamp)
True-Bypass Spring Reverb (transformerless) with Serial FX loop
NEW! Now with an improved reverb/clean mix that gives a purer clean portion of the signal with minimal loss.
(Email to get your pre-2011 MB upgraded)
Gain and Drive knobs can be dialed-in for a great variety of overdrive or hi-gain distortion tones.
Different combinations of 12AX7, 5751, 12AY7, 12AT7 and 12AU7 tubes create a great range of distinct characteristics:
From rich, dynamic and open clean tones to smooth vintage style crunch to high gain punch and compression.
In addition the unique preamp bias adjustment allows to fine tune the sustain and strength of the input tube.
A true-bypass Master Volume allows for vintage style poweramp distortion.
In lower settings it smoothes and balances the distortion tone with increased preamp gain.
NEW - Master Volume now with enhanced extra clean headroom and Gain Knob with push/pull bright switch.
Small Head & Cab
A complete, easy-access bias control section on the rear panel includes bias adjust with test-points for DVM hook-up and balance adjust.
Can be used for maintaining balanced output at different guitar or amp settings or to create alternate harmonic balance shifts.
It also allows for the use of unmatched tubes! A useful tool, considering the ever decreasing supply of matched NOS tubes.
Additional uses are tube tester & analyzer.
The Speaker Cabinets for the Midnight Blues are super-light and have interchangable custom baffleboards.
The dimensions, baffleboard, internal space and weight are in ideal musical balance with the amp and speakers.
The result is a greatly improved dynamic response and better feedback control over the typical bulky and boomy 4x12 cabinets.
Choose your own custom combination of speakers, like 4x12, 15 and 10, 3x12, 4x10, 2x10 and 12, etc.....
Siegmund Amplifiers is the only amp maker offering the exclusive Custom Tone Tubby Hemp Cone Speakers
made to order from a selection of cone types, voice coils and magnet sizes.
All speakers are delivered already broken in.
I wanted to let you know, I entered the MB Head in an amp shoot out here locally and guess who came out on top?
That's right, the MB head!!!
In a blind listening with 1x12, 2x12 and 4x12 cabinets the MB had the best cleans, overdrive and string definition hands down!
The contestants: Park45, Park75, Koch Powertone II, Fender Bassman, JTM45, Plexi , Fender Showman, Vox AC50 ( second on the cleans) to mention a few.
This amp is killing me! And God knows how many amps I had going through my hands, from modern to vintage.
This is the best amp I ever had - period; with endless possibilities and an array of great vintage tones. And I've only scratched the surface.
There is something that newer amps usually have, which is that possibility to bring up almost exclusively the pickup flavor alone.
This amp also brings out the wood of your guitar, like no other.
The touch response is simply amazing. This amp will bring me to another playing level just by the way it responds to my hands.
This amp is unique in every possible way! I have a lot of respect for what you did, sincerely...
Wonderful amp. Has a life and sparkle I have never heard in anything else.
I can balance Gain with Drive to fit any volume, it's a highly tweakable amp and still keep that vintage tone vibe. I can fine tune the amp with endless possibility without opening the amp, this is very unique and no need of an amp tech. And this is one of the best amp not to say the best amp I ever owned. You can find the magic at any volume, with any guitar, pickups and type of room.
This thing is amazing. Played with the band on Sunday and most of the afternoon on Saturday ... haven't even changed tubes, just using it how it was shipped. I can't believe how many different sounds you can get from this amp - and they're all terrific. Using an open backed 2 x 12 with G12H 75s is just about perfect. Looking forward to dinking around with the other tubes ... it's going to be my main squeeze from now on.
This amplifier has me. The tonal qualities are incredible. You can get so much from this one amp that I can't believe it and without pedals. I'm still learning all the possibilities.
I think Clapton would love one. I'm playing through this into 2- speaker cabs with 2- 12" red alnico Tone Tubbys in each and the production is more than I imagined.
Thanks for the advise and amp.
You know I've had a lot of amps come and go through the years but nothing has ever come close to the MB and while I have bought and resold several others the thought to sell my MB has never crossed my mind.
Thanks for manufacturing something so special. It has really enriched my life and I will always treasure it.
Drew Barries, MB owner since 2004
Here are a few sound samples I made with 2x12 Tone Tubby Chicago Blue and Organic speakers.
The guitar is the Suspense
I upgraded a large diaphragm condenser tube mic with a Micro Tube, Neumann U47 replacement capsule and Jensen transformer plugged into the Simplex Mic Pre
MB Clean - 6550
MB Overdrive - KT66
MB Distortion - EL34
Watch Zane Carney playing his Midnight Blues amps on YouTube
played by Zane Carney
I Give It To You
New Best Friend
Angel of Mercy
Face In A Magazine
Lil' Ways Down The Road
Hell of Man
Most Of All
Don't Lie To Me
When Sunny Gets Blue
Midnight Blues in Zane Carney on SoundCloud
Midnight Blues in Zane Carney on iTunes
Midnight Blues in Soulajar Music