
The LA4 Pre-Amplifier
A line Pre-amplifier of outstanding quality and facilities.
Following on the success of our LA3 pre-amp we have listened to your comments and made several changes. These include: Rear connections, Lots of inputs. High and low outputs to match almost any power amp. Remote control. DC heaters for even quieter background.
We have also used the 1941 older type 6SN7 double triode as we feel these have a more fluid sound, and a reputation for a very long life. Probably the best sounding pre-amp valve ever!
Anyone thinking of buying a pre-amp should read the independent lab report on the LA4 in Hi Fi News July 2006. This includes …
“The LA4 offers a ruler flat response to 20 kHz and is only -0.5dB down at 100 kHz…distortion hits an all time low of 0.0009%...the low 100 ohm output impedance ensures it will drive both solid state and valve power amps with ease.”

Specification and features
- Comprehensive manual supplied
- Full instructions for valve change included
- All hand wired point to point
- No printed circuit board to ‘colour’ sound
- Motorised volume pot.
- All Triode design
- 3x 6SN7 valves
- 2x EZ80 Valve rectifier
- Double Choke HT supply
- DC heater supply
- Signal to noise level -85db
- Freq response 20hz-20khz +0 - 0.1db
- Total harmonic distortion typically less than 0.1%
- Gain high x8 low x 1.33
- Max input level 5v for 40v High 6.6v Low
- Very low output impedance Low= 100Ω
- Suitable for power amps 100mv-5v sensitivity
- Japanese steel transformers with low oxygen copper
- Attractive cover included in the price
- High quality 2w metal film, & wire-wound resistors
- Blue LED mains indicator
- Audiophile polypropylene audio capacitors
- Silver TEFLON audio cable
- Ceramic valve holders for minimum leakage
- Gold plated Input terminals
- Four line inputs
- Tape monitor circuit
- 220/240volts 100watts 1A anti-surge fuse
- C E certified
- 395W, 275D, 170H, 14kg (remember to allow space for connections and ventilation)
Price £699.00
Downloads
For full details of this product (including options and delivery details) pls download the PDF and Word doc.
PDF Word.doc
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