Common Features of
London Power Amplifiers



 

London Power's instrument amplifiers are built in a 4U (7", 176mm high) rack-mountable chassis, which can easily be mounted in an amp sleeve to be used in a "head" configuration. The 3-D tube reverb is 2U (3.5", 88mm high).

All amps and accessories have world-wide mains compatibility. The automatic mains range selection allows accommodation of any mains from 100V to 250V in two ranges.

All tubes are accessible from the front by removal of a vent cover even while the amp is still in the rack or amp sleeve. Bias adjustments and meter jacks are also accessed via the vent cover. The bias procedure is in the amp owner's manual.

The range of "tone" amps for creating new and traditional guitar, bass or keyboard sounds include: Studio, Sustainor, Aurora, Mini-Marshmallow, Albion and Zen.

The range of "boost" amplifiers include the Super Scaler. Super Scaler requires power input to produce power output, and must be driven from the speaker output of a tone amp.

All tone amps accept any combination of the following tubes: 12AT7, 12AU7, 12AX7, 12AY7, 12AZ7, E81CC, E82CC, E83CC, ECC-81, ECC-82, ECC-83, 6CA7, 6L6G, 6L6GB, 6L6GC, 6V6, 6V6GT, 5881, 6550A, 6550B, 6550C, 7591A, E34L, EL-34, KT-66, KT-77, KT-88, or any variants. Tone amps can operate with one or two power tubes in place.

All boost amps accept any pair of the following power tubes: 6CA7, 6L6G, 6L6GB, 6L6GC, 6V6, 6V6GT, 5881, 6550A, 6550B, 6550C, 7591A, E34L, EL-34, KT-66, KT-77, KT-88, or any variants. Ideal performance is attained with two tubes of the same type, but dissimilar tubes can be employed.

All tone amps can be operated as 0-25W push-pull, switchable to 0-5W single-ended. In both modes, the BODY control adds warmth. Sustainor is two complete amplifiers, each with 0-25W PP switchable to 0-5W SE. Studio has dual BODY controls for bidirectional single-ended access.

Super Scaler is 0-300W.

All products use custom toroidal power transformers with two levels of noise shielding and world-wide mains compatibility. Tone and Boost amps use custom shielded toroidal output transformers. Selected transformers are used for ground isolation of effects send and return lines, line inputs and line outputs. All products use low-noise metal-film resistors, with flame-proof metal-oxide types in power positions. All capacitors are high-reliability types selected for their specific circuit locations. Tube sockets are ceramic for long life.

The 3-D tube reverb uses a proprietary push-pull drive circuit and custom transformer for very clean signal into the full-length Accutronics custom delay line.

The Stage Link amp switching accessory is powered from any of the tone amps it operates with, including: Aurora, Studio, Sustainor, Mini-Marshmallow, Albion and Zen.

All units have a Five year Warranty for all components, except for: tubes; and the delay line in the 3-D. Units shipped to us for warranty repair will have one-way return shipping covered by the warranty.


Other helpful pages:

London Power Tube Amplifiers and Accessories

Amp Pricing and Ordering Info

Choosing a variable-power guitar amp (currently being updated)
Power Scaling Q&A
Super Scaling Q&A
Effects Loop Truths

And also:
Coolohm Products

And even:
Back Shop - Unique Values


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LONDON POWER
1020 DAWSON ROAD, PO BOX 23011
THUNDER BAY ONTARIO CANADA  P7B 6P1

e-mail: amps@londonpower.com

This page last updated: 17-March-2008