Space Walk is a solid, creative Lounge Lizard EP-4 sound bank worth buying at $19 if you want textured, otherworldly pads and you already own EP-4 or the free AAS Player. If you're hoping for traditional electric piano sounds, look elsewhere.
We tested Space Walk across three sessions: one ambient film cue, one electronic breakdown, and one attempt to use it on a jazz track. Two of those sessions went well. One did not. That gives you an honest read on what this pack actually does and who it's built for.
The $19 standalone price is low enough that the risk is small. But price alone isn't a reason to buy something you'll never open. So here's the full picture.
What You're Actually Getting
Space Walk is a 100-preset sound bank for Applied Acoustics Systems' Lounge Lizard EP-4, designed by Brazilian sound designer Thiago Pinheiro. It runs inside EP-4 or the free AAS Player. It does not work with Lounge Lizard Session.
The presets lean hard into AAS's built-in effect rack: delay, reverb, chorus, distortion, and modulation chains are baked into almost every patch. You're not getting a stripped-back Rhodes. You're getting "Cosmic Dust", "Eerie Nebula", "Abstract Machine", and "Alien Forest". The names are not a metaphor. They describe the sounds accurately.
The physical modeling engine underneath is still EP-4. Hammer, damper, pickup position, tine and bar resonance. But the effect rack sculpts that output so far from source that many patches bear no resemblance to an electric piano.
This is a creative texture pack, not a traditional EP bank. Know that before you click buy.
The Good
We dropped "Theta & Tau" onto a synth pad layer in an ambient track we were scoring for a short film. The patch sits in a high-mid shimmer around 3-5kHz with a slow attack envelope and a reverb tail that spreads for roughly three seconds. It didn't fight the strings. It filled the space between them.
That's the clever part of this pack. Pinheiro has dialed in the effect chains so the patches sit in a mix without heavy post-processing. We didn't need to add reverb or EQ on most of them. That's satisfying to work with.
The tonal range across 100 presets is wider than the "space" branding suggests. "Star Cluster" is metallic and percussive, heavy on high-frequency distortion. "Alien Forest" is soft, slow, and emotive, with a pad quality that layers cleanly under vocals. That's not a small gap. The pack earns its preset count.
Free AAS Player compatibility is a genuine win. You don't need a $99 EP-4 licence to run Space Walk. That matters for bedroom producers watching every dollar.
The Not-So-Good
We tried "Abstract Machine" on a neo-soul session. Frustrating. The patch has so much modulation and high-frequency metallic content that it clashed with every other element in the arrangement. We spent 20 minutes trying to tame it with EQ before giving up.
That's not entirely a design flaw. The pack isn't built for neo-soul. But AAS markets it loosely as an EP-4 expansion, and EP-4 has a jazz and soul legacy. The disconnect is annoying when you haven't heard the sounds before buying.
There are no audio demos embedded on the AAS product page at the time of writing. A $19 blind purchase isn't a huge financial risk, but it's still a bad experience. Competing sound banks in this price tier almost all include demos.
The .dxt file compatibility issue is real. KVR forum users have flagged problems loading patches after certain system updates. AAS has not published a fix or troubleshooting guide. If you hit this, you're digging through forums alone.
EP-5 users: AAS says Space Walk was remastered for EP-5 compatibility. We'd confirm that before purchasing if you're on the newer version.
Compared to the Alternatives
AAS's own Insomnia and Caffeine packs for EP-4 cover different territory. Insomnia runs dark and melancholic, closer to neo-soul and downtempo. Caffeine is brighter and more aggressive, with patches suited to electronic and indie contexts. Space Walk sits apart from both: it's the most experimental of the three and the least useful for traditional electric piano work.
If you want atmospheric pads and textures, a dedicated reverb plugin running over a simple EP-4 preset can achieve similar results with more control. The trade-off is time. Space Walk is faster to deploy.
For cinematic texture work, Lifeline Space at $19 covers some overlapping sonic territory as a standalone plugin. It's not an EP-4 preset pack, but if you don't already own EP-4, it's a smarter spend.
The EP-4 + Space Walk bundle
Who Should Buy This
- ✅ Buy if you already own EP-4 or the free AAS Player and want textured, atmospheric patches fast.
- ✅ Buy if you score for film, TV, or games and need cinematic pad textures without complex synthesis.
- ✅ Buy if you produce ambient or electronic music and want a physical modeling source that doesn't sound like a synth.
- ❌ Skip if you want traditional electric piano sounds. Space Walk has zero.
- ❌ Skip if you don't already own EP-4 and have no interest in the full instrument. The free AAS Player works, but it's limited.
- ❌ Skip if you're on Windows 10 32-bit. The minimum spec is Windows 10 64-bit.
Score Breakdown
| Category | Score | Notes |
|---|---|---|
| Sound Quality | 4.0/5 | Genuinely creative patches with real sonic range; EP-4 engine sounds good |
| Value for Money | 4.0/5 | $19 for 100 presets is fair; no demos makes the blind buy riskier than it should be |
| Ease of Use | 3.0/5 | Presets load easily but no browser metadata, categorization, or searchable tags |
| Features | 3.0/5 | AAS effect rack integration is clever; no patch editing guide or documentation |
| CPU Efficiency | 3.5/5 | Most patches run light; heavy reverb/delay chains on some presets can spike |
| Overall | 3.8/5 | Niche but genuinely useful for ambient and cinematic work at a fair price |
Alternatives to Consider
AAS Insomnia for EP-4: Darker, more neo-soul and downtempo focused. Better for producers who want emotional but grounded electric piano tones. see our full AAS plugin guide
Excite Audio Lifeline Space ($19): Not an EP-4 pack, but covers similar atmospheric pad territory as a standalone plugin. More control, different workflow. read our Lifeline Space review
Standard EP-4 + your own reverb chain: Load a basic EP-4 preset and run it through a creative reverb. You'll get comparable results with full control over the effect parameters. Takes longer but teaches you more. our delay and space guide covers this approach
Space Walk costs $19. At that price, the creative value is real and the downside is limited. But it's a narrow product for a specific producer type. If you're scoring a sci-fi short, building an ambient EP, or layering textures in an electronic production, we'd buy it without hesitation. If you need a workhorse EP bank for live keys or traditional studio work, it'll sit in your library unopened. The presets are well-built. The pack just doesn't pretend to be something it isn't, and neither should you when you're deciding whether to click buy.
Frequently Asked Questions
Do I need to own Lounge Lizard EP-4 to use Space Walk?
No. Space Walk runs inside the free AAS Player, which you can download from the Applied Acoustics Systems site. You don't need a full EP-4 licence. That said, EP-4 gives you deeper editing access to the physical modeling engine and effect rack parameters, so you'll get more out of the pack with the full instrument.
Does Space Walk work with Lounge Lizard Session?
No. AAS is clear on this. Space Walk is compatible with EP-4 and the free AAS Player only. Lounge Lizard Session is a separate, more basic product and the preset format is not cross-compatible. Don't buy the pack expecting to load it in Session.
Are there any known technical issues with Space Walk?
KVR forum users have flagged .dxt file loading problems after certain system updates, and AAS hasn't published an official fix or troubleshooting guide as of our review. If you hit this problem, searching the KVR forum thread on EP-4 compatibility is your best starting point. It's an annoying gap in AAS's support documentation for a paid product.
Is Space Walk useful for traditional electric piano sounds like Rhodes or Wurlitzer-style patches?
No. Space Walk is an atmospheric, experimental expansion pack. Every preset in the 100-patch library leans into space-themed textures, modulated effects, and ambient characteristics. If you want classic Rhodes warmth or Wurlitzer bite, load a standard EP-4 preset instead. Space Walk won't get you there.