LFD AUDIO: The endless newsletter

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  • If you would like regular issues of this LFD newsletter (LFD Audio don't have a website, so this is probably the ONLY way to get up-to-date info on the brand) emailed to you then please contact us HERE and put the phrase 'LFD Audio newsletter request' in the subject line and we'll do the rest.Thanks from Neil - the editor

Updates August 15th 2017

Q 001: Are there any lower cost power cords that really work well with all LFD electronics? I ask because the LFD Silicon Signature at £300 is out of my price range.

A: Yes, we've found ONE power cord from ONE brand that does this and has the added benefit of doing great things for the sound of non-LFD equipment; something that their Silicon Signature power cord does not.

Information on this will be privately emailed to everyone on the LFD Audio newsletter mailing this which can be joined HERE and put the phrase 'LFD Audio newsletter request' in the subject line.

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Three price rises announced

HERE, HERE and ..... HERE

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Updates August 14th 2017

Massive saving on a brand new 2017 specification Zero LE (V)

Due to a cancelled order. European specification. ONE ONLY.  Information on this will be privately emailed to everyone on the LFD Audio newsletter mailing this which can be joined HERE and put the phrase 'LFD Audio newsletter request' in the subject line

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Updates August 13th 2017

Spirolink IV bi-amping cable 1.25m New old stock @ half price

Details HERE

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Pre-owned / Low cost alternative power cord for all LFD electronics

Opening bid with no reserve is £39.00 Details HERE

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Pre-owned / Spirolink III interconnect bargains

Details HERE

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Pre-owned / LSI Linestage / preamp for sale

Details HERE

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This post July 28th 2017

LFD SME arm cable

Details HERE

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This post July 27th 2017

The all-new LFD Mistral integrated amplifier with optional phono stage

Dr. Bews tells us:

The Mistral amplifier is visually similar to LE(V) but with mid-grey finish for front panel.

The internal phonostage of the Mistral is based on a new circuit, which uses a dual op-amp, and so is different to the phonostage LE and needs to be specified at manufacture since the back pcb needs to be modified to allow input "1" to be phono input.

The Power amplifier section is 50w/channel using bipolar technology, output protection using a chip that powers a relay, so NO fuses required.

Theoretically there should be thermal limiting, if the chassis/output devices gets too hot, but i do not play it loud enough for this to happen.

The PSU is oversized for better sound quality, but the output is limited to voltage rails of +/- 35V so power output is limited, it cannot be increased. It sounds powerful for the 50W rating, but technically the limited power, does not limit the sound quality.

The Mistral is essentially a LE(V) with a bipolar 50W/cannel power amplifier section. The Mistral is the NEW entry level LFD amplifier, since once the LE(VI) comes out, LFD amplification will have a better sound but will be at a higher price point.

The UK retail price including vat @ 20% is £2250.00 for the standard version and with on-board phonostage is £2600.00

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This post July 27th 2017

LSI Linestage / preamp for sale

Details

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This post July 26th 2017

Q: Is the Zero LE (V) coming to the end of its production run?

A: We aren't certain but yes, we think it might well be. Dr Bews has, in a recent communication (this month in fact) mentioned a Zero LE (VI) and that's the full extent of the info we have at this time.

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This post July 25th 2017

The new LPCD (low powered class d) integrated amplifier.

Dr Bews tells us .....

The LPCD actually means: low powered class d, and i have been working on this project for 4 years +. Class D amplifiers are very difficult to implement

The cost of the LPCD is for the standard line level version (NO remote control), it can be configured to have internal phonostage or internal DAC (192khz/24bit SPDIF only), at a higher price (probably around 10% extra for phonostage and 13% extra for DAC)..

The standard LPCD will not be available a few months since the front panel finish is being decided at the moment.

I have found that using the technology by International Rectifier, you need to keep the output MOSFET simple and fast (which means limiting the power to a maximum of about 100W-120W). Also the components and the PSU are very important (tweaking a class d amplifier is much more difficult than a standard class A/B amplifier).

To give you an idea of the of the type of requirements, please look at a Japanese company SPEC. The LPCD uses mono amplifiers (100W)/PSU, but uses one mains transformer. It uses a passive preamplifier section like the NCSE (has silver wire as well), but has different RCA sockets which i have made in the Far East (these use a different type of insulation to give a "nicer" sound compared to the usual PTFE and look similar to the WBT 244).

The level of sensitivity to decoupling and PSU parts means you need to spend enormous amounts of time tweaking, which most designers will not or can not do.

The reason i have chosen class d, by International Rectifier, is that the designer of the chip (who is Japanese) has engineered into the sound a more tube-like sound, but you can have problems in that the midband can be very good, but the bass is much lower quality (slow a not well defined).

You need to "speed up" the sound (helps the bass), but without sacrificing the midband quality.

This project has been worthwhile, since i have spent much time on PSU components, and this knowledge will filter in all LFD products, I will never back-off the R&D, because some projects pay dividends in other areas.

Chassis is similar to the NCSE (back panel looks better than NCSE since the RCA sockets looks far better).

Anticipated UK retail price including vat @ 20% is £7500.00

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If you would like regular issues of this LFD newsletter (LFD Audio don't have a website, so this is probably the ONLY way to get up-to-date info on the brand) emailed to you then please contact us HERE and put the phrase 'LFD Audio newsletter request' in the subject line and we'll do the rest.

Thanks

Neil - the editor