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2 x 2.1amp outputs. 8400mAh capacity.

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If you want an SD Card for your camera - these are the ones I use and recommend. 

I'd strongly recommend not to buy any SD cards off ebay - I've heard about too many issues with counterfeit cards - often sold on by unwitting resellers. My inbox regularly gets messages from people who bought a £150 camera then cheaped out and bought a £3 memory card on ebay - Then when it doesn't worth they blame the camera! It doesn't make any sense. Good memory is cheaper than it's ever been - see the links above.

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SPECIAL DASHCAM CARDS

The SD card in a dashcam is re-written over, more frequently than in other types of cameras. Some manufacturers void their guarantee if an SD card was used in a dashcam. So, no surprise, there are special High Endurance SD cards made just for dashcams...here's some.

 

VERY IMPORTANT. These links take you to the product, however Amazon have three different ways of selling. There's Amazon Direct - This means that you are only dealing with Amazon themselves, then there's other sellers that use Amazon's facilities - these show as Fulfilled By Amazon and finally there's Market Place sellers that advertise on Amazon, but operate independently.  I strongly recommend that you only use the first...the Amazon Direct - Sold By Amazon option. Even if it appears that you are paying a couple of £/$ more it is more than likely you are comparing the price of a real item against the price of a fake.

To give you an idea of the extent of the fake goods problem. In a 2016 survey by Apple - 90% of the 'Apple' chargers sold through Amazon - using the other the two methods..which includes the "Fulfilled by Amazon" option -  were found to be counterfeit....90%! 

            

 
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Tuesday
Apr052016

Time to Equalize Some Graphics

I'll be making an upgrade to my HiFi setup in a few weeks which involves shifting quite a few things around. Before this happens I wanted to audition a couple of new (old) components to see if they deserve a place in the new setup.

In this video I look at a sophisticated and surprisingly useful graphic equalizer, the Akai EA-A7.

I realised after finishing the video, I didn't show the rear panel, so here it is.

If you want your own Graphic Equalizer, here are a few ebay options (click to perform a search).

Akai EA-A7 (good luck finding one)  Technics   PilePro    Rockville

Oh, by the way I've deliberately used the American spelling of Equalizer because this is how it it written on the device itself. Akai never made a Graphic Equaliser.

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Reader Comments (18)

A graphic EQ is the diametric opposite of the audiophile "less is more" ethos, esp. for the ascetic crowd who thinks anything beyond a volume knob is heresy. While I'm somewhat in that camp, my Yamaha CX1000 preamp does have tone controls and I do slightly adjust them, but I also have vivid memories of various SAE components from my youth that made my friend's stereo look like the helm of a spaceship - or Ferris Bueller's bedroom. The problem being: more circuitry in the signal path = more distortion, more hiss, lower dynamic range and etc. If you have the specs on this EQ I'd like to see them.
Life is always a compromise, eh?

April 5, 2016 | Unregistered CommenterDavid Sanborn

Hey Mat, what do you listen to the end result on?
Any favourite headphones or speakers, I don't suppose vintage speakers are a thing? I guess they would deteriorate in storage.

April 5, 2016 | Unregistered CommenterTom

Hmm after a little googling it seems vintage speakers can hold up ok. The site below belongs to a guy with a collection of gear not unlike your own.

http://gallagherstory.com/vintage_stereo/index.htm

April 5, 2016 | Unregistered CommenterTom

I love EQs too.

I acquired one of the most awesome and (as far as I know) the only mechanic, 100% analog one that has presets/memories.
http://www.youtube.com/watch?v=at9SZqIHNWY

It has a mechanism with pulleys and cams that moves the sliders itself to the desired position. An impressive device. However, when I plugged it in, I noticed some small looses in the audio quality, mainly in soundstage. I have talked with a true expert in audio quality and he explained me that it's probably the use of IC and the lack of discrete components in the circuit that causes that. I have to say that these loose can only be detected with high-end equipment; with gear more common it just sounds great.

So I finally preferred my Technics SH8020 with 12-band for each channel (from 16Hz to 32kHz), 100% analog and mechanic. It's totally transparent, not narrowing the soundstage or anything else.
The scratching sliders are not a problem for me as mine are not so dirty, but I plan to take it to me trusted techncian to deply clean and restore it with even new audiophile-grade caps so it can sound even better than new.

Thaks for the excellent video and keep sharing curious devices!

April 6, 2016 | Unregistered CommenterHugo

Hugo, you always have such well shot videos.

I was choosing my words carefully in the video because I guessed that if I were to say that Digital EQs had an advantage over analogue models because they could have presets, someone would find an analogue model with a mechanism like this.

I'm glad I did now. That's a very interesting machine and fun to see it in action.

April 6, 2016 | Registered CommenterTechmoan

Actually that graphic equalizer is a perfectly analogue device. DSPs weren't available back then so it probably uses a lot of digital potentiometers. Of course they are still standard on modern AV receivers, just hidden somewhere in the menue and nowhere as fancy as they don't have a nice spectrum analyser.

April 7, 2016 | Unregistered CommenterChristian Berger

Thanks for your kind words, Matt.
Ha ha ha ;-) You did well. You never know...

Another one very interesting is the technics SH-8046, with some sort of tactile pad. Really cool.

Coming from you, your compliment has double value, really. Your videos are really well done in every aspect. I'm curious to know: do you record and put your off voice before editing or after?
I mean: do you start recording your voice and then record the video for it or do you record and edit and then add the voice? I love the way you explain things and how natural your explanations sounds and match the image.

Best regards,

April 7, 2016 | Unregistered CommenterHugo

I record the video in silence, then edit the footage together until it's just about perfect, then add an improvised voiceover to the edited video...doing multiple takes to get the words to fit or match the video.

April 7, 2016 | Registered CommenterTechmoan

Thank Matt, Objective again :-)
I love it. My shops used to by and large choose the stock they thought they could sell. My shop in Shaftesbury avenue loved this sort of stuff, or should I say it was what their customers wanted. My Marble arch branch employed some guys who were more the purist type. They though Ivor Tiefenbrun was god and revered Naim amplifiers with no tone controls whatsoever ~ The gold cable brigade I used to call them. One of my staff told me that the first Naim amplifier was actually a Sinclair design modified by John Linsley Hood.
I used to tell people music was to be enjoyed so I gave them a choices if they wanted graphic equalisers they got them. If they didn't they didn't. What I did observed was a lot of customers changing equipment because they could not live without tone controls.
I think I finally went mad when a member of staff told me to experiment with turning the orientation of the cables around, that is changing ends, because it might sound better.
Perhaps my brain was not attuned to his sort of listening. I got more involved with the music.
I did find myself amongst people who listened to equipment and cables rather that the music being played.
Thanks again for your reviews and insight into the past.

April 8, 2016 | Unregistered CommenterJeremy Travis

I should admit a slight mistake in my last post regarding Naim Amplifiers with not tone controls.
The design was by Julian Vereker.
The comment made was by Richard Linsey Hood who told me his uncle John was asked to modify the design and in his opinion it was a Sinclair design modified.

April 8, 2016 | Unregistered CommenterJeremy Travis

Thanks for the explanation Matt. This inspires me to take a bit of that and use it in my videos too.
You latest videos are really sharp. Excellent lens, sensor and encoding. Can I ask what camera are you using? My Nikon does not make sharp enough videos at FullHD, but I'll be upgrading to the new D500 soon so I can take the footage at 4K and downsample to FullHd so the sharpness will be better ;-)

April 8, 2016 | Unregistered CommenterHugo

I'm using a Sony RX10ii - the last couple of videos have been in 4K because they are shorter than my usual vids.

April 9, 2016 | Registered CommenterTechmoan

The not so high sharpness in many DSLRs are caused by the quick and not so good downsampling (probably very quick and dirty algorithm, far from a spline or lanzcos or even a bicubic) from the native image size, which is also not a direct multiple of the FullHD size.
I guess your SONY probably is using a powerful algorithm for doing the downsampling, or maybe it was the 4K capture and downsampling rendering. That matters. Anyway, congrats for that whole high quality.

April 9, 2016 | Unregistered CommenterHugo

Hi Matt, I really enjoyed watching all your retro hi-fi review videos. Recently, I bought myself a pioneer graphics equalizer from eBay model gr777. Nice review of your graphics equalizer! A great equipment added into your hi-if collection.

Regards
Peter

April 17, 2016 | Unregistered CommenterPeter

Hello!
In your video ''Cassettes - better than you don't remember'', you have a Pioneer RT-909 in the back that I am actually looking to ad to my Pioneer Spec 1,4 and SG-9500 EQ. Could you please do a presentation and a review of it and the CT-F1250 cassette deck?

Thank You,

May 9, 2016 | Unregistered CommenterAdam

It won't be for a few months - but when I catch up with my backlog of gadgets I'll see what I can do - it will be a few months at least before I could get the chance.

May 9, 2016 | Registered CommenterTechmoan

Hi Matt,

I am one of the owners of this EA A7 Graphic Equalizer which i got from ebay recently. I have hooked it up to my Pioneer Amplifier and recently getting a very high pitch buzzing sound from it. I have tried to check the input / output cables and all are in order. However, after playing for a minimum 15 mins of songs, the buzz comes out from both speakers and sometimes it so high, its scares my cats to their room.

I tried unhooking the unit from the amplifier and tested and there is no buzzing sound for hours of music. Any idea if you could advise me on this matter? I have sent it to 2 guys who always services my vintage gear and they said there is some problems with the IC in this unit.

Please advise if possible.

Thanks.

August 13, 2016 | Unregistered CommenterMark Kaanthan

Unfortunately I'm not all that knowledgable about the way electronics work - so I'll have to defer to your infinitely more experienced service people. Unfortunately it does sound like it is irreparable.

August 13, 2016 | Registered CommenterTechmoan

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