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Master Volume Kit

New! A check list for the parts you need for your Master Volume 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 M are the parts used in the MetroAmp build instructions.
There are options available for some parts. Read each section carefully, adjust the quantities if needed; and add the items to your cart.

Instructions

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.
You can download the MetroAmp instructions here:
Download 100W_MV_INST_DOWNLOAD.pdf

Prerequisites

These are the things you need to acquire ahead of time:
Transformers, Choke - Click here for more info

Chassis

MetroAmp 100w Master Volume steel chassis
The same steel chassis supplied with the MetroAmp MV kits
Panels NOT included
$90.00
M
 
MetroAmp socket hole cover$6.00
M
 

Panels

Plexi-style panels for Master Valume chassis.
Panels are supplied undrilled unless they are ordered with a chassis.
$60.00
M
 

Boards

MetroAmp Master Volume Board $32.00
M
 
MetroAmp Master Volume Double Turret Board $37.00
M
 

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
M
 
1/2" Rubber Grommet
for 1/2" chassis opening, 3/8" inside diameter
$0.35
M
 
2 Hole Solder lug
#6 internal tooth
$1.70 pkg of 10
M
 
Master Volume Amp Hardware Kit (Pan Head)
More Hardware
$9.95
M
 
8 Pin Micalex Socket
1 1/2" mounting centers, fits 1 3/16" to 1 1/4" chassis hole, top or bottom mount.
$3.50
M
 
Tube Retainer
For EL34, 5881 or 6L6
$2.00
M
 
9 Pin Micalex Socket with shield base
Fits 3/4" chassis hole. 1 1/8" mounting centers.
$2.95
M
 
Shield for 9 pin socket$1.95
M
 
Medium Can Clamp
1 3/8" clear anodized
$2.00
M
 

Chassis Mounted Capacitors - stock setup used (6)50uf/50uf cans.

F&T Can Capacitors

F&T Dual 16uf 450v$9.95
 
F&T Dual 32uf 500v$9.95
 
F&T Dual 50uf 500v$10.95
M
 

ARS Can Capacitors

ARS 32uf/32uf Dual Can Capacitor 500v
Re-formed and ready to go
$13.00
 
ARS 50uf/50uf Dual Can Capacitor 500v
Re-formed and ready to go
$13.00
 

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
M
 
22awg 2-conductor shielded wire$0.70 per foot
M
 
22awg Tinned Buss wire$0.10 per foot
M
 
18awg Tinned Buss wire$0.20 per foot
M
 
18awg Sleeving
PVC Coated Fiberglass
$0.50 per foot
M
 
1/8" Heat Shrink$0.20 per 4"
M
 
1/4" Heat Shrink $0.25 per 4"
M
 
4" Cable Tie
Black
$0.50 pkg of 10
M
 

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
 
1K 5watt Ohmite$2.50
 
1K 5watt Xicon Wirewound Resistor
Lower cost alternative!
$0.75
M
 

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
M
MetroAmp Kit Options
ValveStorm Kit Options

Master Volume Kit - additional parts

Screen Balance Resistors

56K ohm Metal Oxide 2watt$0.35 each
M
 

Bright Cap

1000pf 2000v Ceramic Capacitor
These get the closest to that vintage tone when used as a bright cap
$0.75
M
 

Presence Pot Resistor

4.7K ohm - 1 watt carbon film
This is required, if the stock 25k presence pot is used.
$0.20
M
 

Power & Switches

Marshall Style Lighted Rocker Switch $9.45
M
 
Marshall Style Black Rocker Switch $5.15
M
 
Marshall New Style Impedance Selector$32.95
M
 
Marshall New "Modern" Voltage Selector$29.95
 

FuseHolders

JMP Style Panel Mount Fuseholder
Smaller opening, specifically for the MetroAmp Master Volume chassis for 1.25" x 0.25" fuses
13mm mounting hole
$5.95
M
 

Power Cords

Modern IEC type connector and cords

IEC Receptacle$1.75
 
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
 

Jacks

New Style Cliff Jack
with plastic ring

Made in the UK.
$2.25
M
 
New Style Cliff Jack
with plastic ring
$1.25
M
 

Potentiometers - pick one

Alpha Pot Amp Set - Master Volume

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

CTS Pot Amp Set - Master Volume

Volume: (2) 1m audio Additional pot sets
Treble: (1) 250k linear
Mid: (1) 25k linear
Bass: (1) 1m audio
Presence: (1) 25k linear
$28.95
 

Coupling Capacitors

Additional choices - click here: More Coupling Caps

Synergy Royal Mustards Capacitors

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

Mallory 150 Capacitors

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

Alternate .68uf Capacitors

Panasonic Polypropylene .68uf 500v
$1.50
 

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
 

Fuses

Fast Blow

1 amp AGC - Fast Blo
.25" x 1.25"
$0.65
M
 
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
M
 

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
M
 
JJ EL34 - Matched Quad $68.00
M
 
JJ EL34 - Matched Quad
Burned in for stability
$68.00
 

Chassis Mounting Bolts

Chassis Mounting Bolts. Qty.4$3.95
M
 

Important News

Happy 2023 !!!
ValveStorm IS OPEN and shipping orders daily!

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