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12xxx Series Build Checklist

A check list for the parts you need for your 12xxx series build.
The list is roughly in the order you will need the parts.
The required quantities are shown next to the default items.
Items marked with a yellow V are the parts we would recommend.
There are options available for some parts. Read each section carefully, adjust the quantities if needed; and add the items to your cart.

Prerequisites

NOTE: PAYPAL HAS SLOWED DOWN THE RESPONSIVENESS OF THE "ADD TO CART" BUTTONS. WHEN YOU ADD ITEMS TO THE CART, THE PAYPAL CART WILL APPEAR IN A NEW BROWSER TAB OR WINDOW. MAKE SURE THAT THE ITEM YOU ARE ADDING APPEARS IN THE CART BEFORE YOU HIT THE NEXT "ADD TO CART" BUTTON OR ITEMS MAY NOT BE ADDED TO THE CART.
These are the things you need to acquire ahead of time:
Transformers, Choke - Click here for more info

Chassis

MetroAmp 12 Series Chassis - Original version
.060" steel chassis. Suitable for building replicas of 100 watt Marshall from the '67 to mid '68 era. Features spot-welded corners. Treated with gold color, zinc chromate finish. NOTE: The new production Belton sockets will NOT fit this chassis, use the Amphenol or Cliff octal sockets instead.
$125.00
 
MetroAmp 12 Series Chassis - Updated version
.060" steel chassis. Updated to accept the new production Belton sockets. Features spot-welded corners. Treated with gold color, zinc chromate finish.
$125.00
V
 
MetroAmp socket hole cover for 12 Series Chassis$6.00
V
 
MetroAmp Power Transformer Mounting Plate for 12 Series and JTM45 Chassis$16.00
V
 

Panels

MetroAmp 100 watt Panel Set
Fits 12 Series and 1969 chassis
$60.00
V
 
MetroAmp JMP style front panel only $30.00
 
MetroAmp 100 watt back panel only$30.00
 
MetroAmp JMP style face plate with JMP marking added
$40.00
 
Custom 100 watt Style back plate
Contact Us to discuss your chassis type.
$55.00+ Contact us
 

Boards

MetroAmp 12 Series Board Set $40.00
V
 
MetroAmp 12 Series Board Set
Fully perfed.
$45.00
 
Double Turret 12 Series Board Set $45.00
 
Double Turret 12 Series Board Set
Fully perfed.
$50.00
 

Mechanicals

The things you need to bolt down to get started!

3/8" Rubber Grommet
for 3/8" chassis opening, 9/32" inside diameter
$0.25
V
 
1/2" Rubber Grommet
for 1/2" chassis opening, 3/8" inside diameter
$0.35
V
 
2 Hole Solder lug
#6 internal tooth
$1.70 pkg of 10
V
 
New Plexi Amp Hardware Kit More Hardware
for amp with laydown power transformers
All bolts have round heads
Large bolts:(6) 1/2" #10,(4) #8 Nuts/washers for PT Small bolts:(6) 1/2",(6) 3/8" - #4 size
$18.95
V
 
8 Pin Micalex Socket
For newer Metro 12 series chassis
1 1/2" mounting centers, fits 1 3/16" to 1 1/4" chassis hole, top or bottom mount.
$3.50
V
 
8 Pin Cliff Socket - Set of 4
Will fit the vintage 12 series chassis
Minimum mounting hole size is 1.125", will work with mounting centers 1.45" to 1.6".
$23.50
 
8 Pin Amphenol Style Socket - Set of 4
Will fit the vintage 12 series chassis
Bottom mount = 1 1/8", top mount is 1 1/4", 1 1/2" mounting centers.
$91.80
 
Tube Retainer
For EL34, 5881 or 6L6
$2.00
V
 
9 Pin Micalex Socket with shield base
Fits 3/4" chassis hole. 1 1/8" mounting centers.
$2.95
V
 
Shield for 9 pin socket$1.95
V
 

PI Capacitor - pick one setup

This option use a standard 1 3/8" mounting ring

Pick one capacitor value

F&T Dual 16uf 450v$9.95
 
F&T Dual 32uf 500v$9.95
 
F&T Dual 50uf 500v$9.95
V
 
Medium Can Clamp
1 3/8" clear anodized
$2.00
V
 

This option uses a 32uf TAD cap with a 1" mounting ring

TAD 32uf Can 500v
Used with Metro 12 series chassis
$6.95
 
Small Can Clamp
1" - Used with TAD 32uf can cap
$2.50
 

Wire and Wiring Accessories

Your going to need these things... make sure you have them now!

Plexi Amp Wiring Kit
12 feet of Red and Black. 7 feet each of Brown, Orange, Yellow, Green, Blue, Purple and White.
$14.55
V
 
22awg Tinned Buss wire$0.10 per foot
V
 
18awg Tinned Buss wire$0.20 per foot
V
 
18awg Sleeving
PVC Coated Fiberglass
$0.50 per foot
V
 
1/8" Heat Shrink$0.20 per 4"
V
 
1/4" Heat Shrink $0.25 per 4"
V
 
4" Cable Tie
Black
$0.50 pkg of 10
V
 

Screen Socket Resistors

You need to pick a style and get four of these!

1K 7watt Welwyn W22 Wirewound Resistor
For that cool classic look!
$2.95
V
 
1K 5watt Ohmite$2.50
 
1K 5watt Xicon Wirewound Resistor
Lower cost alternative!
$0.75
 

Marshall Components Kit

The small components needed to complete the kit!

Resistors: All 1 watt and 2 watt resistors included (5 watt screen socket resistors not included)
Silver Mica Caps: (3) 500pf, (1) 250pf, (1) 100pf, (1) 47pf
Small Electrolytic Caps: (2)10uf bias and (2)cathode bypass ((1)330uf and (1)220-250uf)
Diodes: (5) 1N4007
25k trimmers: (1) Vertical, (1) Horizontal
The ValveStorm version of the kit(s) substitute 1 watt Carbon Film resistors with longer leads for some of the 2 watt Metal Oxides. Provided resistors list: Kit resistor Comparison
Brands and types provided may vary depending upon availability
V
MetroAmp Kit Options
ValveStorm Kit Options

Alternate Electrolytics - Select "No Aluminum Caps" from the kit above

Cathode Bypass Capacitors - Pick one for the Normal channel

BC Components 220uf axial 25v $1.50
 
BC Components 330uf axial 25v $2.00
 
BC Components 330uf axial 25v - Light Blue
Higher temp version
$3.95
 
Sprague Atom 250uf axial 25v $4.25
 
Sprague 330uf axial 25v $1.95
 

Bias Capacitors - Pick two of the same type

BC 10uf Axial 160v$2.50
V
 

Wiring Tube Sockets and Transformers

6v Marshall Indicator
Includes star retaining ring. Let us know if you want the e-clips instead. Installing 6v Indicators
$6.95
V
 
Marshall New Style Impedance Selector$32.95
V
 

Power & Standby Switches

You need to get two switches. If you are going to use a Metro Dual Voltage Power Transformer, get one of the red ones.

DPST Switch
20A @125v,10A @250v
$7.95
V
 
Dual-Voltage Switch
Newer version 3PDT Switch for use with dual voltage power transformers.
$17.95
 
Marshall Chrome Toggle Ring
The more modern style with the beveled edges
See vintage style here: More info
$3.95
V
 

FuseHolders

Pick two of one type...

For 5/8" holes with Double-D shape. Use with latest Metro 12series and Ceriatone chassis

Panel Mount Fuseholder
for 1.25" x 0.25" fuses
Fits 5/8" mounting hole with Double-D shape
$2.50
V
 

For 5/8" holes with round shape.

Panel Mount Fuseholder
for 1.25" x 0.25" fuses
5/8" mounting hole
$3.00
 
Panel Mount Fuseholder
for 1.25" x 0.25" fuses
5/8" mounting hole
$7.00
 

Power Cords

Modern IEC type connector and cords

IEC Receptacle$1.75
V
 
New! IEC punch service for steel chassis
28mm x 21mm rectangular cutout
$7.50
V
 
8 foot Power Cord with IEC female end SVT (Marshall type) 18 awg. $4.95
 
12 foot Power Cord with IEC female end SVT (Marshall type) 18 awg. $6.95
V
 

Bare End cords and strain relief

Strain relief for SVT cord
1/2" opening
$0.50
M
 
New! Locking strain relief for SVT cord
fits 1/2" opening
$1.50
 
8 foot Power Cord, 18 AWG, 3 Conductor, Black
Bare end SVT type
$4.95
M
 
12 foot Power Cord, 18 AWG, 3 Conductor, Black
Bare end SVT type
$6.95
 

Jacks

Old Style Cliff Jack
with metal ring
Made in the UK.
Additional jacks
$2.25
V
 

Potentiometers - pick one

CTS Pot Amp Set

5/16" bushing lengths, 3/8" brass shafts
Volume: (2) 1m audio Additional pot sets
Treble: (1) 250k linear
Mid: (1) 25k linear
Bass: (1) 1m audio
Presence: (1) 5k linear
$28.95
V
 

Alpha Pot Amp Set

Volume: (2) 1m audio Additional pot sets
Treble: (1) 250k linear
Mid: (1) 25k linear
Bass: (1) 1m audio
Presence: (1) 5k linear
$8.95
 

Filter Capacitors

Power Board Capacitors

F&T Axial 100uf 450v
.99" diameter x 1.96" long
$9.50
V
 
F&T Axial 30uf 500v
.99" diameter x 1.48" length
$7.50
V
 

Preamp Board Capacitors - Pick one style

F&T Dual Axial 33uf/33uf 450v
$9.95
V
 
F&T Axial 16uf 475v
Allows for separate grounding points on the preamp stages. Buy two.
.64" diameter x 1.55" length
$5.95
 

Coupling Capacitors

Additional choices - click here: More Coupling Caps

Synergy Royal Mustards Capacitors

Synergy Royal Mustards .0022uf 500v$4.00
V
 
Synergy Royal Mustards .022uf 500v$4.00
V
 
Synergy Royal Mustards .1uf 500v$5.70
V
 
Synergy Royal Mustards .68uf 200v$6.00
V
 

Mallory 150 Capacitors

Note: Picture does not indicate actual capacitor. Capacitors are yellow unless otherwise idicated.
Mallory .0022uf 630v (yellow case)$0.80
 
Mallory .022uf 630v (yellow case)$1.00
 
Mallory .1uf 630v (yellow case)$1.25
 
Mallory .68uf 100v (yellow case)$2.75
 

Alternate .68uf Capacitors

Panasonic Polypropylene .68uf 500v
$1.50
 

1/2 watt NOS AB Resistors - Optional

Additional resistor choices - click here: More Carbon Comps

820 ohm 5% - Long leads$2.00
 
33K ohm 5% - Long leads$1.00
 
47K ohm 5% - Long leads$1.25
 
68K ohm 5% - Long leads$2.75
 
100K ohm 5% - long leads$3.00
 
470K ohm 5% - Long leads$4.00
 
1meg ohm 5% - Long leads$1.75
 

Knobs

Additional knob choices - click here: More Knobs

Set-screw knob pkg of 8
Low profile knobs(0.6") with light gold colored caps.
$11.95
V
 

Fuses

Fast Blow

1 amp AGC - Fast Blo
.25" x 1.25"
$0.65
V
 
2 amp AGC - Fast Blo, Mains Fuse (240v)
.25" x 1.25"
$0.65
 
4 amp AGC - Fast Blo, Mains Fuse (120v)
.25" x 1.25"
$0.65
V
 

Slow Blow

1 amp AGC - Slo Blo
.25" x 1.25"
$0.70
 
2 amp AGC - Slo Blo, Mains Fuse (240v)
.25" x 1.25"
$0.70
 
4 amp AGC - Slo Blo, Mains Fuse (120v)
.25" x 1.25"
$0.70
 

Tubes

Additional tube choices - click here: More Tubes

JJ 12ax7 - spiral filament $12.95
V
 
JJ EL34 - Matched Quad $68.00
V
 
JJ EL34 - Matched Quad
Burned in for stability
$68.00
 

Chassis Mounting Bolts

Chassis Mounting Bolts. Qty.4$3.95
V
 

Important News

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ValveStorm IS OPEN and shipping orders daily!

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