How much difference could a simple Banana plug make?


Well - I've tried several different types of Banana connector over the past 8-10 years and although there were subtle improvements from one plug to another, there was never any "remarkable" improvements.

That was - until yesterday !

My - how things changed :-)

If you search the forums, you'll find several posts and reviews by me touting the benefits attained by using products from KLE Innovations. I like them a lot and consider them among the best products in the market.

The  KLEI™Classic Harmony Banana Connector/Adaptor is not just "another Banana Plug"

https://kleinnovations.com/kle-innovations-klei-products/klei-harmony-banana/klei-classic-harmony-ba...

To start with, it is designed to be multi functional - you can use it as...
- A single Banana Connector
- A stack-able Bananas Connector - e.g. it allows you to easily attach jumpers  when connecting a single cable to a bi-wired speaker 
- A Banana Adapter - e.g. as a temporary connection of bi-wired cables to a single wire speaker i.e. without leaving one set not connected.

There may also be other uses that I am yet to discover.

What makes these plug so special
1. they boast an impressive IACS conductivity rating >101%  - that's impressive for a copper product
2. they are engineered to allow another banana plug to be inserted into the insulated housing
3. they have perfectly round spring pins - most spring pins are not completely round
4. they fit into all of the banana terminals I have tried with an unforced "snugness" that grips the speaker and amp terminals securely.
5. they are dead simple to connect using solder
6. removal is also very easy if you want to try them on a different cables

KLE Innovators state they can be crimped, but that's not something I would personally try - perhaps that have a special crimping tool?

So how did this unassuming looking little banana improve sound quality ?...
1. the most noticeable improvement was the width and depth of the image - much bigger than my room
2. overall clarity was front and center and added some nice "sparkle" in the high end
3. instrument placement and isolation within the image was improved
4. The dynamics were noticeably faster.
5. additional texture in bass lines were very nicely reproduced

I think the best genre of music that shows off the full capability of these bananas is classical - even my worst recording sounded very spacious and allowed be to discern the distinct boundaries of first/second viollins, violas, cellos and double bass sections within the orchestra and the added depth placed brass, woodwind and percussion in equally isolated spaces front to back within the image

"Is This Love", by Bob Marley was cavernous and sounded like it was being performed in a stadium!

These connectors also excel in allowing micro details such as subtle venue reverberations and reflections to be more noticeable than with any other banana connector I have used in the past.

If the speaker cables in your system utilizes a more standard Banana plug -  I'd highly recommend replacing them with the KLEI Bananas.

Cost is $135 Aussie Dollars (about $100 US)

What did I use before these?

The most recent was a spring connector from ebay like this
https://www.ebay.ca/itm/4x-Acoustic-Copper-Silver-Plated-APS5-Speaker-Cable-Banana-Plug-Connector/30...

Other "named" products included Spring Banana plugs from Neotech and a pure copper connector from Furez - none of which performed to the level of this plug

There are not many products that improve sound this much for $100 - go on - give em a try!

Back to the tunes :-)

Steve
williewonka
As I mentioned in a PM to williewonka I have 16 of these KLEI™Classic Harmony Banana Connectors ordered and I hope to receive them by or before December 1st. I'll use WBT 4% silver solder and burn in the bananas using my Audiodharma Cable Cooker. The bananas will attach to 
Duelund DCA 16 gauge wire and a pair of Heavy duty Western Electric 10 wire. I'll keep you posted here regarding the results.
Post removed 
Something that came to my attention regarding the removal of the plastic housing once the plug has been completely installed...

How do you release that little flap on the back
It is fairly simple, but DO NOT use another banana plug to do this - it may damage the tip.

Take a small screwdriver and
- insert it into the hole that allows you to stack the bananas,
- but only just enough to get a grip on the little flap,
- then simply pry the flap open by applying a little pressure

DO NOT try to push the little tabs on the side of the flaps to release it

It is very simple but you need to use something quite robust, like a screw driver, and you must only insert it into the plastic flap and NOT into the metal barrel

I’ll also state the obvious:
  • these Plugs are of the "spring" variety and like other spring types, they will not take a lot of rough handling. Be careful not to knock them once installed.
  • DO NOT force them into the speaker or amp terminal, they slide in quite nicely with a gentle push once lined up correctly.
  • Rotation is not required.

I’ve used a few of this type of banana and these are the easiest to insert and require less force than others that I have tried.

KLE Innovations plan on detailing installation/removal procedures on their web site at a future date

Regards


I received 16 of the KLEI™Classic Harmony Banana Connectors and finally made time to use WBT 4% silver solder on my Duelund 16 gauge (top terminals on speaker) and 12 gauge (bass terminals on speaker).
I must admit that the KLEI™Classic Harmony Banana Connectors are simple yet very well made. Easy to solder and I really like the design where one can piggyback the bananas together which is what I did to connect to the terminals on my CJ Classic Sixty SE amp. The design for banana tension is also very good.
I used my Audiodharma Cable Cooker and burn in the bananas and Duelund wire (which was already good to go) for 136 hours and this morning I transferred the speaker cables over to my system and will allow additional hours for settle in time before I attempt to say anything else about the bananas other than if you are in the market for bananas you should definitely consider these..
@lak - looking forward to your feedback on the bananas. :-)

QUESTION: Have you ever tried using the 16 gauge for the signal on both LF and HF leads and then use the  thicker 10 gauge as the neutral conductors of HF and LF  leads.

I've found this has positive effects - but the conductors have to be separated (or the neutral wound in the Helix) for this to work best

Regards - Steve