50 Watt Build Checklist
New! A check list for the parts you need for your 50 Watt 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.
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 50_WATT_KIT_INSTRUCTIONS.pdf | |||
Prerequisites | |||
| These are the things you need to acquire ahead of time: Transformers, Choke - Click here for more info | |||
Chassis | |||
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MetroAmp 50 watt chassis Lay-down Power transformer 1/2" round power inlet 17 1/8” x 6 7/8” x 2 5/8” mounting tabs add 3/4" to each end | $75.00 M | |
| Same as above, but with IEC power inlet | $75.00 | ||
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MetroAmp 50 watt chassis Stand-up Power transformer IEC power inlet, FX Loop 17 1/8” x 6 7/8” x 2 5/8”; mounting tabs add 3/4" to each end | $75.00 | |
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MetroAmp 50 watt chassis Black Zinc finish w/ IEC opening 17 1/8” x 6 7/8” x 2 5/8” mounting tabs add 3/4" to each end | $75.00 | |
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MetroAmp Power Transformer Mounting Plate for Laydown power Transformers | $16.00 | |
Board | |||
 | MetroAmp 50 watt Board | $30.00 M | |
 | MetroAmp 50 watt Board Fully perfed | $35.00 | |
 | Double Turret 50watt Board | $35.00 | |
 | Double Turret 50watt Board Fully perfed | $40.00 | |
Panels | |||
Sets | |||
 | MetroAmp 50watt Panel Set MetroAmp panels are supplied undrilled unless they are ordered with a chassis. | $55.00 M | |
Individual | |||
| MetroAmp 50watt back panel only Same back panel as in the set above | $30.00 | ||
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Black Flag style face plate from Sparky |
$35.00 | |
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MetroAmp JMP style face plate with JMP marking added |
$40.00 | |
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Custom 50 watt Style back plate Let us know what custom text of hole locations you need. Contact Us to discuss. |
$45.00 | |
MechanicalsThe things you need to bolt down to get started! | |||
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3/8" Rubber Grommet for 3/8" chassis opening, 9/32" inside diameter |
$0.25 M |
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| 1/2" Rubber Grommet for 1/2" chassis opening, 3/8" inside diameter | $0.35 M | ||
| 3/4" Rubber Grommet for 3/4" chassis opening, 9/16" inside diameter For chassis that use a stand-up power transformer | $0.35 | ||
 | 2 Hole Solder lug #6 internal tooth | $1.70 pkg of 10 M | |
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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 M | |
| 5/8" Brass bolt | |||
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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 | |
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Tube Retainer For EL34, 5881 or 6L6 | $2.00 M | |
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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 - pick two | |||
F&T Can Capacitors | |||
 | F&T Dual 50uf 500v | $10.95 M | |
ARS Can Capacitors | |||
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ARS 50uf/50uf Dual Can Capacitor 500v Re-formed and ready to go | $13.00 | |
Bridge Rectifier | |||
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Bridge Rectifier 1000v 15Amp | $4.95 M | |
Wire and Wiring AccessoriesYour 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 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 ResistorsYou need to pick a style and get two of these! | |||
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1K 7watt Welwyn W22 Wirewound Resistor For that cool classic look! | $2.95 | |
 | 1K 5watt Ohmite | $2.50 | |
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1K 5watt Xicon Wirewound Resistor Lower cost alternative! | $0.75 M | |
Marshall Components KitThe small components needed to complete the kit! | |||
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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 | ||
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 | ||
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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 | |
Wiring Tube Sockets and Transformers | |||
 | Marshall New Style Impedance Selector | $32.95 M | |
Voltage Selector - Optional | |||
 | Marshall New "Modern" Voltage Selector | $29.95 | |
Indicator Lamp | |||
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120v Marshall Indicator w/ solder lugs | $4.95 M | |
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6v Marshall Indicator Includes star retaining ring. Let us know if you want the e-clips instead. Installing 6v Indicators | $6.95 | |
Power & Standby Switches | |||
 | SPST Switch 3A @250V, 6A @125V; 1/2" mounting hole. | $3.95 M | |
 | Marshall Chrome Toggle Ring The more modern style with the beveled edges See vintage style here: More info | $3.95 M | |
FuseHoldersFor 5/8" holes - Two similar ones... pick two of one type... | |||
 | Panel Mount Fuseholder for 1.25" x 0.25" fuses 5/8" mounting hole | $3.00 | |
| Panel Mount Fuseholder as used in Metro amps for 1.25" x 0.25" fuses 5/8" mounting hole | $7.00 M | ||
For 5/8" holes with Double-D shape (Ceriatone) | |||
 | Panel Mount Fuseholder for 1.25" x 0.25" fuses Fits 5/8" mounting hole with Double-D shape Fits Ceriatone chassis | $2.50 | |
For 1/2" holes | |||
 | Panel Mount Fuseholder for 1.25" x 0.25" fuses 1/2" mounting hole | $2.50 | |
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 | ||
Bare End cords and strain relief | |||
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Strain relief for SVT cord 1/2" opening | $0.50 M | |
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New! Locking strain relief for SVT cord fits 1/2" opening | $1.50 | |
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8 foot Power Cord, 18 AWG, 3 Conductor, Black Bare end SVT type | $4.95 M | |
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12 foot Power Cord, 18 AWG, 3 Conductor, Black Bare end SVT type | $6.95 | ||
Jacks | |||
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Old Style Cliff Jack with metal ring Made in the UK. Additional jacks | $2.25 M | |
Potentiometers - pick one | |||
CTS Pot Amp Set | |||
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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 | |
Alpha Pot Amp Set | |||
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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 M | |
Preamp Capacitors | |||
Filter Capacitors - Pick one style | |||
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F&T Dual Axial 33uf/33uf 450v | $9.95 M | |
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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 CapacitorsAdditional choices - click here: More Coupling Caps | |||
Synergy Royal Mustards Capacitors | |||
 | Synergy Royal Mustards .0022uf 500v | $4.00 | |
| 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. | |||
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Mallory .0022uf 630v (yellow case) | $0.80 M | |
| 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 | |||
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Panasonic Polypropylene .68uf 500v | $1.50 | |
1/2 watt NOS AB Resistors - Optional | |||
Additional resistor choices - click here: More Carbon Comps | |||
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| 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 | |||
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Set-screw knob pkg of 8 Low profile knobs(0.6") with light gold colored caps. | $11.95 M | |
Fuses | |||
Fast Blow | |||
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.5 amp AGC - Fast Blo, HT Fuse .25" x 1.25" | $0.65 M | |
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2 amp AGC - Fast Blo, Mains Fuse (240v) .25" x 1.25" | $0.65 | ||
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3 amp AGC - Fast Blo, Mains Fuse (120v) .25" x 1.25" | $0.65 M | ||
Slow Blow | |||
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.5 amp AGC - Slo Blo, HT Fuse .25" x 1.25" | $0.70 | |
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2 amp AGC - Slo Blo, Mains Fuse (240v) .25" x 1.25" | $0.70 | ||
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3 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 | |
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JJ EL34 - Matched Pair | $34.00 M | |
| JJ EL34 - Matched Pair Burned in for stability | $34.00 | ||
Chassis Mounting Bolts | |||
 | Chassis Mounting Bolts. Qty.4 | $3.95 M | |
