What a great video! I love your bass lick that you play at the beginning of every example. Very spacey and calming. Thank you!

@spi-fi_media

3 жыл бұрын

Thanks! Didn't feel the need to be flashy, just to share some samples of this setup.

@rosscostuart3409

11 ай бұрын

Go away chomo

@tiltil9442

6 ай бұрын

Just had to comment in order to see my "Happy to be here!" in this thread comprising LowEndLobster, Spector, Wal and some, indeed, rather trippy and soothing riffage.

As a musician, I ask myself about my tone and tone production practically every time I play. I actually thought every musician did that. I guess not, for me it's probably a carry over from playing acoustic instruments like classical guitar, jazz double bass and a few wind instruments. With those, I try and produce a good tone every time I play. The same goes for electric bass for me.

That Spector sounds AMAZING!!! And the pallet of tone choices is just crazy. Absolutely LOVE your playing. And LOVE the way you explain things. Wonderful and informative video.

@spi-fi_media

Жыл бұрын

Thanks dude! New video is up! More of the way! Hooray!

Dang, that's a lot of pickup selections. Killer! Nice work on the video, looking forward to seeing more.

Some serious tone here bro! Love it. I've also got a Spector lx. Amazing basses! I shall be watching this video a few more times to understand all the tonal options!

We need more videos, sir

@spi-fi_media

3 жыл бұрын

They're coming! Thank yyyoooouuuuu!

Wow! Nice playing, and the infographic is a brilliant feature! Lovely sounds from that wood and wire gem.

Those sound great! So many possibilities. I wonder how would that work with a filter preamp. Great documentation on the sound options, thank you for your work!

The bottoms are phenomenal!! The highs so sweet!! Everything crystal clear!!

@spi-fi_media

3 жыл бұрын

it's like a prefect blend of a single coil and humbucker in one unit, hard to explain the tone

Lovely tones! IMHO the Rautia pickups provide a drastic improvement over the standard Spector tone.

an amazing part of the production of this video that i didn’t think about until today: Switching all the controls in the correct order and not getting lost! lol

Fantastic slap tone. This seems like a dream bass.

@steffomca762

3 жыл бұрын

You mean it is, a dream bass

@spi-fi_media

3 жыл бұрын

I've never played anything like it, and I was able to put this together for under $2k! I have a video coming with some updates, looking forward to sharing all I've learned in the last 1.5 years!

@ts4gv

2 жыл бұрын

@@spi-fi_media all 26,000 of us are ready & waiting my friend

@spi-fi_media

2 жыл бұрын

@@ts4gv Wow! Good point! I'm putting the finishing touches on now! 1 week TOPS! Thanks a lot man! :D

@ts4gv

2 жыл бұрын

@@spi-fi_media niice dude. I think this channel has a ton of potential. super excited for the next one.

Because of this video, I bought a set of Rautia MusicMan style multi-coil pickups. They won't arrive for a few months though because he has a huge backlog. I can't wait to receive them!

Awesome work! Been checking out these on rautia but now i also know how they sound!

That opening statement is hilarious too. 🤣🤣🤣

This is just outstanding! I'm an happy Spector Euro LX4 and MusicMan stingray 5 owner , but this seems like the perfect mix of those bass plus a Wal mk2!! Man this video made my day! I'll go check Rautia and maybe i'll build my self a bass and put those on!

@spi-fi_media

3 жыл бұрын

Wow, thanks!

So basically 24 ways this bass sounds awesome. I love it

@spi-fi_media

3 жыл бұрын

No bad options!

Awesome demo! What a great sounding and versatile instrument!

@spi-fi_media

3 жыл бұрын

Thank you kindly!

This is great demo and info diagrams of coils switching. Very wide and useful tonality options even with no active preamp (passive way). Prpopably most std humbackers can works this way (separated colis output required). Can you share wiring diagram please? I want to make my thunderbird bass to work this way too.

The bass sounds Beautiful

Cool Video! Love the overview of the pickups on the right

Amaizing video, need more please

Awesome demo! Sad you don't have more content, this was super well produced

@spi-fi_media

3 жыл бұрын

Much appreciated! Much on the way, just navigating complex work schedules

nice work!

@spi-fi_media

4 жыл бұрын

ernie hawkins ttthhhaaannnkkksss!!!

I'd love to see more videos with these. Particularly with distortion. I hope you get around to making some more!

@spi-fi_media

4 жыл бұрын

Lots of stuff coming, and now there's time! Just wish circumstances weren't the causation, but alas, here we're!

@drphalanges1520

4 жыл бұрын

@@spi-fi_media I get that. I have a Nordstrand Big Blademan coming and I won't get to hear it loud until this all blows over.

@dangiampietro6606

3 жыл бұрын

@@spi-fi_media still anxiously waiting :)

Great video!

I've got a Spector NS2, I dream to own a Wal MK2 some day :)

I like the way you play.

Great demonstration! Extremely versatile pickups and Rautiaguitars seem very knowledgeable based on their pickup selection. Has me thinking of building a Wal style bass....too bad East-UK stopped making the EQ01 wal style Q-filter preamp. That combo would kill!

@spi-fi_media

3 жыл бұрын

john east still makes it for ACG, there's a link above in the comments, have a look!

@johnglynhughes4239

Жыл бұрын

Tbh I owned an AGG equipped with the EQ01 and it doesn't sound like the Wal at all. I also owned an 85 Wal and nothing comes close to that sound...but the Wal was heavy and not particularly ergonomic to play imo.

And the 2 most important Wal Bass players: Percy Jones and Mick Karn...

Hey man , nice sound, that spector sounds great, but to many options, some barely can notice, but that picks and preamp sound amazing

@InternationalBassStation

3 жыл бұрын

Very subtle differences, maybe more pronounced if I add some EQ, etc. Thanks for checking in! More to come, do subscribe!

great review

@spi-fi_media

4 жыл бұрын

Raafo Fresca thanks!

Awesome video, thank you!

@spi-fi_media

3 жыл бұрын

Glad you liked it!

most versatile bass ever assembled

@spi-fi_media

3 жыл бұрын

if only it also made coffee...

Great playing. Great skills, tone and lovely feel. I like the bass a LOT. See why Guy Pratt & Doug WImbish love 'em. The pickups are very interesting, I'd love to try them m'self. Wonder how close they are to Enfield SIM things. What I AM gonna do is get me a set of Dunlop SS strings tho!

@spi-fi_media

3 жыл бұрын

Thanks! I'm personally not yet a fan of the Sims, every pickup is a compromise, those seem to shorten the compromises required in making a selection. The best solution is more basses!

I thoroughly enjoyed watching this. Great work all around! The video editing is next level. So the question is... can you do this mod to a cheaper instrument like an Ibanez SR bass?

@spi-fi_media

4 жыл бұрын

Of course, he can custom make whatever kind of pickup into whatever kind housing. Unless it’s physically impossible of course...

Amazing ❤️❤️

@spi-fi_media

3 жыл бұрын

You are!

Series neck/parallel bridge is my favorite. Snappy but full.

great video. How did you connect the ground wire from the bridge cavity? I have almost the same bass but since the stock electronic is active, there is not any links connect those.

The bass and pickups do sound very nice 👌 The WAL electronics were special because of the low-pass filters for each pickup, kindof like Alembic, and was a big part of that special sound.

@spi-fi_media

3 жыл бұрын

Well said! I'm exploring Wal-like preamps, it'll be featured within the next year!

7:02 oh my god that growl

@cd0u50c9

3 ай бұрын

Almost Musicman-like in a way..

I'm confused.So many options.It sounds wonderful.I like parallel settings for the most part.What is your favorite?I'm thinking of putting a Lusithand preamp on my Spector with EMGs.

So is multi coil different from a normal humbucker in terms of wiring? Like is this possible with a normal humbucker type pickup?

Hi I have a Spector bass with Rautia pickups ; but I don’t have a way to switch to series, parallel , single coil inside and single coil outside ! Do you have a wiring chart for that ? Rautia is out of business ! I own a Wal bass from 1993 and it does not give you the option of switching between series and parallel or single coil either! How is that accomplished? Thanks for helping me ! Lalo Garcia

I'm a sucker for a nice Bridge pickup and that Bridge Parralel sounds sweet.

@spi-fi_media

4 жыл бұрын

Not a Homosexual I agree. My favourite combo is the Parallel Bridge with a Single Inside Neck. It changes every week though!

Sounds great, what series are hem or how do you order hem...

Sounds fantastic! Thinking these would sound great paired with an Audere 3ZB preamp, though adding switchable impedance and capacitance to the many coil selections might create a sense of option paralysis...

@spi-fi_media

3 жыл бұрын

Good call! I like those preamps.

My favorite setting in this video was “Series Neck, Parallel Bridge”

combo 3 and 4 sound nice

I prefer the middy nasal of the new way wiring. It's less flexible, but I prefer the string isolation of it; each string has a little series humbucker, all wired in parallel.

@spi-fi_media

3 жыл бұрын

Yes! That's my plan with my US Spector. New-Way and a HAZ, yes I'll make a video about it!

Our tastes are in Music are TOTALLY Divergent, However, I appreciate your Skill..

@spi-fi_media

3 жыл бұрын

I play bass for Martone, and XL the band, which you may find more to your tastes! Check em out!

I should point out that John East (makers of the J-Retro) produce (or used to produce) dual filter preamps called the EQ-01 similar to the legendary Wal preamp. I imagine that would sound spectacular with these pickups! Great playing and overview!

@aarondavis5850

3 жыл бұрын

No longer in production, unfortunately, though ACG is considering another run of the single LPF EQ-02.

@kylemundy8871

3 жыл бұрын

I checked their website and it looks like they're selling again. I've heard they produce them in limited batches from time to time. Check again?

@aarondavis5850

3 жыл бұрын

@@kylemundy8871 I already bought two, haha -- Alan from ACG DM'd me on a forum because he knew I wanted some. I didn't even know they were up on the site. Thanks for the heads up though!

@MorganTheCool

3 жыл бұрын

@@kylemundy8871 Rejoice! It does look like they are back in stock. Here's the link: www.acguitars.co.uk/acg-eq01-filter-pre-amp/ I should also point out that LusitHand Devices make a similar filter preamp. There isn't much on them online, but they do maintain some social media pages - namely Facebook and Instagram. Here's a link to a video from their KZread channel: kzread.info/dash/bejne/eHp-xq1xiaqwY7w.html Happy bassing!

@spi-fi_media

3 жыл бұрын

I might try one, but I'm actually leaning towards the John East uni-pre. We'll see!

Dude you cant do this to me. I already need to buy so much more gear and now I have to add these!

@spi-fi_media

4 жыл бұрын

sorry?? :D

8:45 Jazz Bass 7:00 StingRay-ish 5:06 Rick bridge

Next video soon please!! Please try to emulate the Wal sound as much as you can,thanks!

@spi-fi_media

4 жыл бұрын

I got a few on the way, just getting the studio set up once I finish some session work!

@spi-fi_media

4 жыл бұрын

I will also note, that I went for the passive Wal sound, not the active one, so it’s different for sure!

Great video! Enjoyed the different tones out of these pickups. Did you do the wiring?

@spi-fi_media

3 жыл бұрын

Yes I did! Video coming up for that...

Wow! Nice video👍🏻 give us more please!!

@spi-fi_media

3 жыл бұрын

More to come!

@janellesoutar5317

3 жыл бұрын

@@spi-fi_media yes please!!

Mick Karn did more for Wal basses than any other bassist , He used Wal exclusively and had a sound like no other bassist , players like Lee and Flea used them for the odd track, anyway interesting video and yes those pickups sound great.

@spi-fi_media

4 жыл бұрын

I went and checked out a bunch of Mick Karn after your comment, and yeah, what a player! What tone!

@patbassman8251

4 жыл бұрын

@@spi-fi_media Cool glad you like , I like a couple tracks with Japan in particular ,Quiet life, his own solo LP everything is good , He worked with Pete Murphy from Bauhaus for a bit that was called , Dalis car, interesting bass playing on that too, his playing style was quite out of the norm and had no formal training and was self thought , anyway him and his Wal were a good match , RIP Mick karn.

@jacklifeson

3 жыл бұрын

Love MK but Geddy, Flea and now Justin Chancellor have done more to drive up demand than anyone. Geddy & JC used them for years not just an odd track.

@patbassman8251

3 жыл бұрын

@@jacklifeson I very much doubt British bass player are running out to buy a Wal because Lee played one.

@Toolmybass

3 жыл бұрын

@@patbassman8251 wrong...the black MKI and the Red MKII fetch the highest amount of the solid finished Wal's because of Geddy..FYI Many people refer to them as the "Geddy" model. Maybe know what your talking about before commenting......

Should I get these and put them into my Alembic Europe? Because they sound so nice!

@spi-fi_media

3 жыл бұрын

I dunno man, Alembics are pretty awesome too!

You play a lot stuff that sounds like Steve Vai! :)

Wonder how these would sound in my Geoff Gould, beings it has the graphite neck..

@spi-fi_media

3 жыл бұрын

Graphite necks need a little more warmth added I find. These may help!

I'm surprised the pickups do so much heavy lifting. I figured a filter based preamp would be the secret. Very cool

@spi-fi_media

3 жыл бұрын

Right? That's next on the list for this best quite possibly!

Hello again !! I would love to hear a review a couple of years on ! do you still have this bass? How do you feel about it?

@tiltil9442

6 ай бұрын

Me too!

Yes and Yes Sir so right.

Nice groove on that backing track, can you tell me what it is...Thanks.

@spi-fi_media

4 жыл бұрын

I have a few drummer friends who send me loops on occasion. Not something I can share unfortunately. Just a 4-bar 6/8 groove, looping indefinitely!

@garyhobbs9481

4 жыл бұрын

Well it’s pretty cool. I spent 2 hours clicking through the Logic drum tracks trying to find it! Lol great Chanel keep it up. Nice tone too.

The very moment I have my Master Degree in Maths I will damn sure do this with my P-bass too! :-D

@spi-fi_media

3 жыл бұрын

Rautia makes multicoil P pickups as well! Whatever you want, he'll figure it out!

I just bought the new 2020 Spector lx5 with the emg tw and Spector tone pump and been looking to upgrade the eq. But now maybe these pickups and eq. What exactly are you using for pickups and eq? Would like to possibly but them. Thanks. Great sound and great playing!!!

@spi-fi_media

3 жыл бұрын

Pickups are the Rautias, they're pricey, but don't need a preamp in my opinion. However, I have some builds I'm planning right now which will offer some suggestions. Check out John East Preamps, and the EQ-1 he makes for ACG!

@joegone9772

3 жыл бұрын

@@spi-fi_media i already was checking out the John East and that's what i was considering getting also. I do want the best so pricy is ok. If you can send me done links that would be great. Thanks man

@spi-fi_media

3 жыл бұрын

@@joegone9772 have you subscribed?? :)

@joegone9772

3 жыл бұрын

@@spi-fi_media to this page i have yes. The more i use my bass the more i like the EMG tw's with the tone pump. But always looking to upgrade.

@spi-fi_media

3 жыл бұрын

@@joegone9772 My US Spector came with EMG TW CS and an Aguilar OBP-3. It sounds killer, but I’m switching over these pickups to that bass and doing something new to this one soon!

I'm really curious how they sound with a pick. I've had my eyes on a Wal for years, and haven't found a good way to replicate the sound. Curious to see how well they can mimic the aggressive Wal picking style. Also, thank you for making by far the best gear review video I've ever seen.

@spi-fi_media

4 жыл бұрын

Yes, I realized I should have done that after the fact, I'm not a great pick player, BUT I can hold my own for a short while. I'll be posting a new video next month, subscribe and you'll know when that happens! :)

@bobbywingood

4 жыл бұрын

@@spi-fi_media Done!

@Toolmybass

3 жыл бұрын

@@spi-fi_media What happened to that next vid you were going to post, using a pick?

@Scrouik007

Жыл бұрын

@@Toolmybass To late ! You are now a subscriber ! :D

Too many switching options for me, especially for live gigs, but the pickups and bass sound great.

I feel like if you get this bass you don't need any other bass because it covers every possible tone available and it does that very good

@spi-fi_media

3 жыл бұрын

Pretty close, I still play upright and a hollow body with flat wounds.

@tiltil9442

6 ай бұрын

This! Both.

C'mon beardtobald. You should have posted the guy who inspired these famous bass players to pick up the wal in the first place. Percy Jones of Brand X, and Mick Karn of Japan. Geeze, Geddy mentioned brand X all the time back in the day. it is no wonder he used a wal on power windows, and yes it certainly helped that Mr Collins had one in the studio. While these pickyups sound great, I dont hear any of the classic "Walness" to them. Still great sounding pickups!

@InternationalBassStation

3 жыл бұрын

It's so weird, I thought I had Mick Karn in my teleprompter text or in photos, but you're right, I left him out. These videos are deep plunge for me, it's hard to get everyone! Brand X is a classic, mad respect! It's hard to hear an unprocessed raw sound, especially when you're used to hearing these with the full preamp, and however they were recorded. The tone comes out a little more during the slap sections. I'll be adding some processing in my next videos to really show some tonal differences.

lightest weight of my 5 string basses, it`s a spector euro lx 5

@spi-fi_media

3 жыл бұрын

chronic pain? worth it!

Never played a Wal or a Spector,sound like nice basses though

@spi-fi_media

3 жыл бұрын

They're dream instruments, even if you only get to try them at the music store, they're worth the trip IMO

omg the store was closed :(

"Bro, tone is in the hands" -ok for this part i would like you to make this squier sound like a spector with "Wall bass" like pickups in Bridge single inside config, thank you

@spi-fi_media

3 жыл бұрын

Noted! Send me the materials and I'll see what I can do, heheh

@4L10

3 жыл бұрын

Yeah. And then there's the "It's the bass" guy who thinks the bassist is good because of the fancy bass. (sigh!)

This is like gold but to say Wal basses are mostly unknown in the bass community is not true. We all love the Wal, whish I still had mine.

Pretty sure I can make my cheap Chinese bass sound close to the same with a couple of cheap dimarzios. Worked on an album where I used Tools Wall bass… so yeah..meh. L.A 1994 A&M release btw .

@1:07 There was also a headless bass used on this album. Great tone with these pickups....but not in the realm of Wal sound and or tone.

@spi-fi_media

4 жыл бұрын

Thx for commenting! Any idea which song? I looked this up a few ways, and had to correct myself (thus the text) Keep in mind this is the passive Wal bass copy (wired “old way”. To emulate the Wal preamp would be a HUGE undertaking!

@miljoneir

4 жыл бұрын

@@spi-fi_media Part of the magic in their preamps is that each pickup has it's own input and is blended actively, then an adjustable lpf is applied with the tone controls. I suspect you might get a similar sound by using a preamp that also has two inputs and to do any other sound coloring with the amp or eq pedal. An option might be a Richter MX, Noll mixpot or apparently EMG also has such a thing.

@InternationalBassStation

4 жыл бұрын

@@miljoneir If I were going after the Newer pickup wiring and Active system, I'd be going for that sound. Plus: you're absolutely right! I'd love to track down a schematic for the preamp for other basses in the future. Thanks for hanging out!

As a non native english speaker, just to make sure I got this right: These are passive pickups, yes?

@spi-fi_media

4 жыл бұрын

Yes! Passive Pickups (16k in series mode) and Passive Electronics. An Active Wal bass still has passive pickups (4k) and active electronics, as 4k is considered low output.

@tiltil9442

6 ай бұрын

*impedance

I'm surprised that you didn't wire it so that you could get split coil options, but it still sounds rad!

@spi-fi_media

3 жыл бұрын

I think I know what you mean, but it's not wired in a way to split coils like a P-bass, but I did consider it when ordering the pickups, by grabbing three on top, and two on the bottom, would cancel some of the hum but not all. I also considered zig zagging the coils for the same effect, but kept it straight because I wanted a 51' P type sound as an option! The 4-way switch was enough of a challenge to figure out! Perhaps in future experiments! I got some interesting things coming up that are in the works, so do subscribe if you like this sort of research and setup experimentation!

@lucagarciaferrari

3 жыл бұрын

@@spi-fi_media ah, I see! Yes, I was meaning getting two coils on one side and three on the other to have it like a normal P bass. But those are fair reasons! I’m subbed, keen to see any new experiments you’ve cooked up :)

@4L10

3 жыл бұрын

@@spi-fi_media Keep it the way it is man. Your neck humbucker in series mode kills any classic P. Plus you don't have to deal with asymmetric coil locations and string tone balance. Even the reverse P does solve it only half way. Just keep this. Far superior. I'm doing something similar with single coils and mini-humbuckers. 4 in total, high side slanted towards the neck for better string to string feel and low side towards the bridge for slightly tighter low B timbre. I won't be making it 24 combi though! :D

Sounds good but does not "nail" the Wal tone. I tried myself to find a cheaper "solution" but finally gave in and bought a Wal then I bought three more. By the way this was before they were selling for 10k each.

spector + wal + zon

Veijo Rautia: pron. "Vay(like day but a bit further back in the mouth)-oh(ultra short, not long like ohhh) Rau-(Hou in house, slight rolled R if one can manage this)-tya(ultra short tija, like Tijuana?). I hear where your pronounciation comes from though. NHL commentators absolutely _mangle_ player's names without any consideration or effort. Those guys get _paid_ and still don't put in the work!

@spi-fi_media

3 жыл бұрын

It's true, I asked for pronunciation AFTER I filmed my segments, check out the end of the video for the man himself making a cameo!

@TristanJCumpole

3 жыл бұрын

@@spi-fi_media How'd you find the difference in pronounciation? Finnish names can be surprisingly difficult, but like German, is a language that reads off the page once it's understood how it works. I can read a whole book in Finnish and not understand it, but pronounce everything perfectly. Not exactly a popular party trick though!

@TristanJCumpole

3 жыл бұрын

Nice timing as well. I've got an upcoming bass build, which will be an Aria Pro II design; a two pickup black n' gold carved top bass in which I'll be fitting a couple of Veijo's Wal pickups plus a self-developed state variable filter preamp like vintage Wals. Fun times!

These pickups sound awesome, but don't sound like a Wal. I do appreciate the demonstration, however. Cheers.

@spi-fi_media

3 жыл бұрын

It's sounds a LOT like the passive Wal basses I've tried, not the Active ones, just to be clear

@SaculNoshploda

3 жыл бұрын

BeardFadeToBald I see. My mistake.

@spi-fi_media

3 жыл бұрын

@@SaculNoshploda Hey no worries, I'm glad you participated! I'm hoping to make my US Spector a little more like the active Wal at some point. It's a massive undertaking, but hopefully I can find some accurate solutions.

Funny, it sounded nothing like a Wal, but def a 1 of a kind

@InternationalBassStation

3 жыл бұрын

Have you heard a passive Wal?

🤤🤤🤤🤤😋

Cупер ! Та чі мoжливo дoсягти такoгo звучання на сцені ?..

@spi-fi_media

3 жыл бұрын

На сцені це ЛУЧШЕ звучить!

@victorpustovoi.5444

3 жыл бұрын

@@spi-fi_media Мабуть так ... Вдoскoналенню меж немає ! Гарний звук надихає , і завжди в ціні ! Та нажаль , гарний звук не кoжнoму пo карману ... Мабуть ви щаслива людина ! Бажаю успіхів ! Бас гітара звучить бoжественo ! Дякую щo відпoвіли українськoю ! Бережи вас Бoже !

if you think that tone sounds like 10k, then i got some ocean front property in Arizona to sell you

Can someone explain why spi fi only has 1 video on his channel?

Why hasn’t this guy been inactive for so long?

They sound nothing like wal bro

@spi-fi_media

3 жыл бұрын

Ever try a passive Wal?

@Toolmybass

3 жыл бұрын

@@spi-fi_media Pretty sure 99% of every bass player out there hasn't even heard a passive Wal....nevermind "trying" one. There isn't very many around.....they were only made for a short time at the early stages of Wal. As i mentioned before....the pups you made sound awesome. But not Wal-ish (passive or active) Have a listen to the new Tool song Descending...not a Wal, but its the closest any other bass/pup/electronics are going to get.

@spi-fi_media

3 жыл бұрын

Aim for the stars, land in the sky! It’s not a perfect copy, but the overall design is close. I’m planning on taking this a bit further, next up is an active copy with a few redesigns. I’ll also post a play-through with this bass and some active tone shaping. That said, have you tried a passive Wal? I guess I got lucky with the chance to try the one I did to inspire this experiment. Besides, it’s fun to try these different designs, I may be done with standard coils for a while! It also sounds amazing with dead strings, much to my surprise. What bass did Justin play on that song? I can’t really tell due to the processing. The Demeter preamp is likely just as rare of a thing to own as a passive Wal! I’m speculating of course...

@rosscostuart3409

2 жыл бұрын

You're lying to yourself

@rngrzulu1275

2 жыл бұрын

@@spi-fi_media I’d love the wiring diagram. But I’d really love to see how to do this set up with a filter preamp that can function like a Wal’s!!!