Building on the success of the earlier marques, the LA4 MKIII has improved cosmetics and an upgraded circuit. Now with lower feedback and lower gain the macro dynamics and sound stage are enhanced.
A deceptively simple high quality single stage design followed by an output buffer. But what makes the LA4 III special is the power supply and our “finely tuned” design. A high end pre amplifier must have the best power supply. The LA4 MK III has two chokes in double Pi configuration for well conditioned power giving superb smoothing for velvety inky black silence. The rectifier valve, which makes a surprising difference, is the excellent GZ34. This outstanding Western Electric design is probably the best sounding power valve available.
The three audio valves we use are the 6SN7 double triodes. This 1940 vintage valve has all the best characteristics for the job, and its larger size means long life and good stability. Also the sound is more musical as we feel these have a more fluid sound. You can experiment with both vintage and modern types.
Built to last
Like all our equipment the LA4 III is very solidly made. It has a heavy alloy and steel chassis. The internal wiring is all “point to point”, “hand wired”, this is essential for valve amplifiers, and allows for upgrading to larger capacitors, and makes future servicing very simple.
Very simple high quality line pre-amp. Ideal for virtually any kind of power amplifier.
- Comprehensive manual supplied
- All hand wired point to point without PCBs
- ALPs motorised volume pot.
- All Triode design
- 3x 6SN7 valves (CV181)
- Adaptors available for 12AU7/ECC82
- GZ34 Valve rectifier (also 5AR4/274B)
- Double Choke HT supply
- DC heater supply
- Signal to noise level -90db
- Freq response 20hz-20khz +0 – 0.1db
- Total harmonic distortion typically less than 0.1%
- Gain x4, 12db
- Max input level 5v for 20v output#
- Very low output impedance of 100Ω
- Suitable for power amps 100mv-5v sensitivity
- Attractive valve cover available (£50 extra).
- High quality 2w metal film, & wire-wound resistors
- Solen/SCR audio capacitors (Jensen upgrade option)
- Silver PTFE audio cable
- Gold plated Input terminals
- Four line inputs
- Tape monitor circuit and record output
- Optional plexiglass valve cover available
- 230/117volts 100watts
- C E compliant
- 25cmW, 37D, 23H (with 274B and cover), or 17H with GZ34 (no cover) 12kg packed#
(Specifications subject to change, errors & omissions excepted 06/07/18)
Various valve and capacitor upgrades are available
We are still delivering orders as normal. When your order ships you will still receive tracking details. For UK shipments, Our couriers have procedures in place to ensure deliveries are arriving as quickly & safely as possible. Drivers can now sign for your parcels, however will notify you that they have arrived, in order to ensure you receive your parcel. Signing for the parcel has now been stopped temporally for hygiene reasons. Drivers are also working with customer instructions, so you can ask them to leave the parcel in a safe place (doorstep etc...) if you prefer not to come into direct contact with the driver.
Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around.
Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person.
If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!
We can offer very generous trade in offers across the majority of our product range.
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If you have any question, please feel free to call us on 03435236169 or email firstname.lastname@example.org