Have you ever wanted to compare two (or more!) sets of interconnects or
listen to the difference between a couple of preamps or a few CD players
or be your own armchair reviewer? How about you guys with the Manley Steelhead?
You have one line input available and have to keep swapping cables when
you want to listen to your CD or tuner? Hey, or would you like to go backwards
and have one source drive either this or that? And why has no one ever commercially
offered a real high-end audiophile thing to do this job?
What you need is a simple A-->B Source switcher, and that's what the
new Manley SKIPJACK® is, and more. But behind the deceptively simple facia
is some incredibly clever and thoughtful engineering. It's a small box,
and it seems too simple, but there is a lot to tell you about this new unit.
Please bear with me...
A little history. Learning from past experience: We have been building little
switch boxes for years which we use at the factory or in our listening systems
to compare two different things. When we are evaluating new designs, these
utility boxes can quickly and conveniently switch between two different
circuits either on the test bench or in a playback system in order to compare
A vs. B. Our earliest rinky-dink plastic in-house switchboxes were just
a couple of RCAs wired to a toggle switch. A few problems with this approach:
1) Toggle switches produce an audible click because the contact is not make-before-break.
2) You get a lot of high frequency leakage across small toggle switches
which destroys your imaging cues.
3) You need to use long cables running back and forth between you and the
gear in order to switch from your listening position while listening so
now you're listening to long cables.
4) Usually you run out of available poles to be able to also switch grounds
which leaves you with potential ground loops from all the RCAs being permanently
tied together.
5) Little flimsy plastic boxes get pulled all over the place by those gigantic
hifi cables and they just won't sit where you tell them to!
The next step. Drawing from our Pro Studio designs: Borrowing technology
we designed into many custom Mastering Consoles built for the most discerning
clients we have ever run across, we brought our little research lab switchboxes
to the next level. I call Mastering Engineers "Professional Audiophiles."
These guys put the finishing touches on an album and make the final decisions
on how it should sound before it goes to pressing. To be able to do this
well, they need a highly precise listening environment, expertly built room
acoustics, durable and reliable equipment, and an absolutely transparent
sounding monitoring/playback chain.
The heart of a Mastering Studio is the Mastering Console which provides
switching and inserts for the processing equipment and performs all the
source selection and monitoring functions for the playback chain. Think
of it as a humongous hifi preamp with more switches, knobs, and inserts
than you have ever seen on any hifi preamp.
In the old days we used to build these consoles entirely passively
but with the ever-evolving complexity of trying to do all this switching
not just for two channels, but two channels balanced (two times everything),
and then now 5.1 Surround (six times everything), and then 5.1 Surround
balanced (twelve times everything), we began looking seriously into relays
and we found some excellent ones.
It ain't just the Relays, it's how you use them: A few secrets to making
relays truly outperform conventional switching first include choosing the
right part for the job. Contact material choices, construction specifications,
listening tests, and years of experience with these relays doing 24/7/365
workhorse duty in studios around the world have led us to our fave relay
choices for audio switching. Another trick we employ is doubling up of the
relay contacts for maximum signal integrity.
It's logical. Isn't it? While you can use conventional toggle or push-button
switches to send the control voltages to the relays to energize or de-energize
the coils that hold the contacts open or closed, with some simple logic
circuits you can make these relays do more advanced functions. But then
as your feature wish list grows longer, your parts count gets higher and
by the time you're done with it you have almost built a discrete computer.
Enter the amazing PIC chip and Jerry's clever software programming. We stumbled
onto a very clever one-chip solution as to how to drive many relays and
indicator LEDs in the advanced manner we wanted to. It is a multi-input/output
device that we program with software code to do whatever we want it to do.
Eeeeks! Isn't that a microprocessor? Yes it is, but more cool is it turns
itself off when it isn't hearing commands and so it won't make any noise
that can infect your audio. Now with software programming instead of timing
capacitors we can tell this driver chip how long and when we want the relays
to make their connections, say, for example to make absolutely silent transitions,
or we can write code to put the Skipjack into A-B-X mode where it selects
A, then B, then either A or B randomly to really test your listening skills.
Lots of clever stuff can be done with this technology, and we're doing it
all here in the SKIPJACK.
Location. Location. Location. There are printed circuit boards to hold the
jacks and relays and parts down somewhere but no audio travels over any
PCB traces in the SKIPJACK. The entire audio path is hand wired point-to-point
for total transparency. We use a silver core audiophile wire inside and
there's only about an inch and a half of wire injected into the signal path
that you will listen through. While most people claim they can hear the
difference between cables, I have to doubt anyone can really hear sonic
effects of two RCA connections, doubled up relay contacts and a couple inches
of very low capacitance silver wire. My design goal here is to provide a
real audiophile grade and totally transparent switcher. I can't hear this
box in or out of circuit. Maybe you have better hearing than I do... in
any case, you won't find better to do this job.
In a pickle? Switching on the SKIPJACK can be done on the front panel via
the illuminated buttons. This is good for source selection say, to add up
to 4 more inputs to your Steelhead, or other preamplifiers, amplifiers or
whatever you need more inputs for. In addition, for comparative switching
duties, say for cable shootouts or other A-B (or A-B-C-D) evaluations, the
SKIPJACK comes with a 25 foot cable remote "pickle switch" so you can sit
in your listening chair and switch between A and B without having to get
up. Switch away! And the LED in the pickle remote lights up so you can remember
which input you are one without having to look away over at the front panel
display of the main SKIPJACK unit.
Going wireless! But wait! There's more: we also will (someday) offer a combo
RF/IR remote for the SKIPJACK that can be purchased separately. The Radio
Frequency remote can travel through walls and doesn't have to be pointed
at the SKIPJACK to control it. With this, you can hide the SKIPJACK back
behind your equipment rack if you need to. We also plan for Infra Red transmission
too so you can integrate this SKIPJACK remote with your existing programmable
remotes, such as a PRONTO or other learning remotes you might have.
Go backwards! It doesn't care. If you want to come in through the output
with, say your CD Player and then select whether it will drive your living
room amplifiers or your bedroom system, go for it. There's even modes for
allowing BOTH A and B to be selected at the same time if you want to use
the SKIPJACK as a giant Y-Cable/splitter box. Yeah, really! You can set
it up as a 2 into 3 or 3 into 2 box where "D" becomes another "X".
Gang 'em up! Hey what if you want to add, for instance, a Home Theater Bypass
function to your main stereo preamplifier? If you use the 3 into 2 mode
where "D" becomes another output you can have your any of your 3 sources
(A-B-C) either drive output "D" which might be your pristine stereo high-end
preamplifier for conventional stereo hifi playback or output "X" which could
be your surround processor for multi-channel playback. You could use another
SKIPJACK to work together on the inputs of your main two channel L and R
amplifiers and select either the L&R outputs from your Hifi Stereo Preamplifier
or the main L&R outputs from your HT Surround Processor! Use the pickle
remote cable access on both SKIPJACKs to link them up so they switch at
the same time! Or use the optional wireless remote. Too cool, huh?
A little HEFT: Another consideration designed into the SKIPJACK is making
it weigh something. Too many audiophile cables are fat and huge and their
weight would pull a flimsier switchbox off your shelf. We screwed a big
hunk o' steel into the bottom of the SKIPJACK chassis to be able to counter-balance
six of the most chunky overweight cables you can plug into it. We really
did try to think of everything.
Power to the people! The SKIPJACK is powered up by a little 12 volt DC wallwart.
That's all it needs on the outside with our good filtration and regulation
on the inside and buying one instead of us making one helps keep the cost
down on Mr. SKIPJACK.
This is just the beginning... we will develop more versions on this theme:
balanced versions, more inputs, matrixed outputs, level presets, there is
so much we can do with this SKIPJACK and its elegant and flexible technology.
This first little baby SKIPJACK is to prove to the audiophile world that
we can build a smart 4 way switcher that is as close to inaudible as anyone
would hope to come. A useful tool everyone needs. Audiophiles, Reviewers,
Store Owners, fellow manufacturers-- give us a call and catch a SKIPJACK
for your system.
The Manley SKIPJACK: An EveAnna Manley production. Starring EveAnna and
Hutch as the brainstorming and design team, and Jerry Garszva as PIC programmer
and layout engineer. Prototype Engineering by Gamma Ibarra. Mastered by
Baltazar Hernandez. Handcrafted with pride in Chino, California, USA!