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Description
MSW-820 Analogue SynthesizerDiscord Channel is up! Click Here USER MANUAL MSW 820 is a 2 oscillator based analogue monosynth with an advanced 16 mode voltage controlled filter, 2 envelope generators, digital LFO with sync and trigger functions, digital noise source with 8 flavors, MIDI (TRS or USB), all in a compact desktop or euro format. Specifications: VCOs AS3340 Based, Pulse and Sawtooth Waveforms ENV Modulation (OSC1, 5 to 5) and LFO Modulation (OSC2, 0 10) Range: 16' 8'
Discord Channel is up! Click Here
USER MANUAL
MSW-820 is a 2 oscillator based analogue monosynth with an advanced 16 mode voltage controlled filter, 2 envelope generators, digital LFO with sync and trigger functions, digital noise source with 8 flavors, MIDI (TRS or USB), all in a compact desktop or euro format.
Specifications:
VCOs
- AS3340 Based, Pulse and Sawtooth Waveforms
- ENV Modulation (OSC1, -5 to 5) and LFO Modulation (OSC2, 0-10)
- Range: 16'/8'/4', 7 Octaves
- Pulse Width Modulation: 50% to Min
- PWM Mode: ENV/Manual/LFO Modulation
- Master and OSC2 (offset) Tune Control
- Pulse/Sawtooth Mixer control per Oscillator
- 2 Hard Sync Modes: O2 Track Pitch or O2 Do not track pitch
- 2 Reset Modes: Reset O1 on gate or Reset O1 and O2 on gate
Sound Mixer
- External Input (pre filter)OSC 1 Level
- OSC 2 Level
- Sub Osc Level tracking OSC1 with 1, 2, and 2 PWM Octave Settings
-
Noise Level with 8 Noise Models:
White, Pink, Hex Invert, Crackle, Orgone (pitched), Sonar (pitched)
VCF
- AS3109 Base16 Modes. Low Pass, High Pass, Band Pass, Allpass (aka Phase)
- Cutoff Frequency: 10Hz to 20kHz
- Resonance: 0- Self Oscillation
- CV Follow: 0-100%
- "This" knob (Audio rate filter modulation from OSC1's triangle output)
- Envelope Modulation via Attenuverter (-5 to 5)
- LFO Modulation via Attenuverter (-5 to 5)
- Pitch Modulation via Attenuverter (-5 to 5)
- External CV Modulation via Attenuverter (-5 to 5)
LFO
-
Rate: 0.1 Hz to 22 Hz. 8 Shapes with crossfade between shapes:
Sine, Square, Ramp, Tri, Saw, Expo Decay, Random, Smoothed Random - 2 Reset Modes. Reset on Gate and Reset on Gate with Phase Control (via Fade knob)
- Fade Control: LFO Delay (Reset off, Reset Mode II) or LFO Phase (Reset Mode II)
- Bipolar Rate indicator
Envelopes
- Attack time: 1.5 ms to 2 s
- Decay time: 2 ms to 10 s
- Sustain Level: 0-100%
- Release Time: 2 ms to 10 s
- Modulation Envelope is hardwired to Modulation bus
- VCA Envelope is hardwired to VCA
Portamento
- Main Pitch (Master Tune) slide
Accent
- Two Modes: Accent on VCF, Accent on VCF and VCA
- Accent level controlled via EXT mod slider
VCA/Output Mixer/VCA 2
- Synth VCA Control
- External Input (Thru, VCA2 via MOD Env, VCA 2 via EXT CV)
Inputs/Outputs
- MIDI IN. TRS 3.5mm PSIMIDI (either A or B)
- Clock IN to Control LFO Rate**
- Gate IN. 5-10V*
- V/Oct IN*
- Ext CV (VCF Modulation OR Accent Gate)
- CV2 (VCA2 CV Input)
- Audio IN
- Synth/Mix OUT
- USB C IN/OUT. 5V Power 200 mA. DC Adapter included. Also serves as USB MIDI
*Analog inputs override MIDI
**Overrides MIDI clock, switches LFO to clocked mode
MIDI Control/ MIDI Features
- LFO Shape CC# 14
- LFO Rate (divisor when clocked) CC# 20
- LFO Reset to phase CC# 22
- LFO sample and hold/release (switch @ 64) CC# 23
- Pitch bend up range* CC# 3
- Pitch bend down range (use up range if zero)* CC# 86
- Filter freq (via ExtCv slider) CC# 74
- Noise select* CC# 30
- Noise click mode (switch @ 64) CC# 89
- Porta time* CC# 5
- Porta on/off (switch @ 64)** CC# 65
- Porta “glide mode” (switch @ 64) CC# 85
- Mod wheel CC# 1
- Mod depth(LFO to Pitch amount in semitones)* ??
- Velocity to filter mod amount* ??
*Setting is saved
**saved, but only activated when MIDI is detected
Included
Universal wall adapter, USB A to USB C cable (power and Data), 1.5m TRS MIDI Cable (type A)
Power
5V DC, 200 mA USB C (Adapter Included)
Euro Power: +12V 100 mA, -12V 80 mA
Dimensions
220x120x50 900g
Euro: 46HP
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Perfect for Acne-Prone Skin!
This serum has honestly been a great addition to my routine for redness and post-acne marks. The texture is lightweight, hydrating, and doesn’t feel sticky or heavy on my oily/acne-prone skin.
I have sensitive skin with a focus on barrier protection, and this didn’t irritate my skin at all. It layers beautifully with the rest of my skincare and leaves my skin looking calmer and smoother over time. AND, it doesn’t have a smell!!
Definitely one of my favorite azelaic acid serums I’ve tried.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
6-Month Update: Still a staple for sensitive, acne-prone skin
Size: 3.38 Fl Oz (Pack of 1), Size: 3.38 Fl Oz (Pack of 1)
I originally reviewed this ampoule when I first started using it, and now after about six months of consistent use (morning and night), I feel confident giving a more long-term update.
I have sensitive, acne-prone, combination skin, and this has remained one of the most reliable products in my routine. The texture is still one of my favorite things about it — very lightweight, absorbs quickly, and layers well under moisturizer and sunscreen without pilling.
Over time, I’ve noticed:
Less visible redness
More balanced oil production in my T-zone
Fewer irritation flare-ups when introducing new products
No clogged pores or breakouts from this formula
It doesn’t feel heavy or sticky, even in humid weather. I’ve continued repurchasing and even keep it on subscription because it consistently performs without causing sensitivity.
If you’re looking for a gentle, soothing centella product that works well for long-term barrier support, this has proven to be a dependable option in my experience.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2025
★★★★★ 5
Healed my barrier so fast
Size: 3.38 Fl Oz (Pack of 1)
I received this ampoule yesterday and I'm already leaving a 5 star review after 2 uses because it just worked so well. I bought it because I've recently incorporated the Timeless 20% Vitamin C into my routine and that + my tretinoin made my skin drier than I've ever felt it before, even gently swiping a cotton pad with micellar would sting on some parts of my face. As soon as this ampoule arrived I applied it to clean skin and layered squalane on top (my moisturizer was burning as well.) This product did not sting my face AT ALL. It instead felt immediately soothing and hydrating. When I woke up this morning almost all of my redness was gone, my skin didn't feel tight or irritated, and my skin tone looked so even and glowy. I never thought a product, especially such a simply formulated one, could heal my barrier so quickly but that's exactly what it did and I can already tell it's a repeat buy. If you have redness prone sensitive skin and/or you use several high strength actives, this ampoule is a must have and it might be the key for anyone struggling to tolerate high strength retinoids. I got the largest size bottle for $15 on sale and it's seriously one of the most affordable and effective skincare products I've ever had in my routine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Safe, Lightweight, Hydrating – Perfect for sensitive, super oily, acne-prone skin
Size: 1.85 Fl Oz (Pack of 1), Size: 1.85 Fl Oz (Pack of 1)
I care most about the ingredients, and this Madagascar Centella Ampule is excellent — all the ingredients are safe, with no potential harm to your health, and it’s Yuka app approved with a 100/100 safety score. I feel confident using it on my sensitive, super oily, acne-prone skin.
It’s super lightweight, absorbs quickly, and is not sticky at all — after applying, you just feel comfortable hydration. Even after a few hours, my skin doesn’t get oily, unlike some other serums I’ve used. It helps calm my skin and restore the barrier, which is perfect for my skin type. Even when I have acne wounds, it doesn’t irritate or sting — it’s extremely gentle. For sensitive, super oily, acne-prone skin like mine, it works wonderfully.
Living in Utah, one of the driest states in the U.S., this serum keeps my skin hydrated even in very dry conditions, and a little goes a long way — 1–1.5 drops cover my face and neck. Using more can make my skin slightly oily, so just the right amount works perfectly. For someone with dry skin, results may differ, but for my skin type, it works beautifully.
It’s also super affordable, and I’m glad it’s available on Amazon, with occasional great deals at Costco. I appreciate that it’s accessible at this price because this serum helps my skin a lot — very gentle on my acne-prone, sensitive, super oily skin.
The serum is super easy to apply with the dropper, which keeps other things from getting into the bottle — it’s perfect for easy, hygienic application. Just note that the bottle is glass, so be careful — it may break if dropped.
I’ve only been using it for three weeks, but it’s already a staple. I currently use one bottle, and the other two are extra for long-term use, especially since I got them on a great deal. This is now my main hydration serum, and I’ll update after longer use if needed.
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Reviewed in the United States on January 19, 2026
★★★★★ 5
Very impressed
Size: 3.38 Fl Oz (Pack of 1)
Really impressed by this serum! Got this to soothe my skin after overdoing it with too many different “actives”, and it gently and quickly got rid of redness and flaking, restored my skin barrier, and left my skin so moisturized and supple that I didn’t even feel like I needed lotion or cream afterwards. And it’s a GENEROUSLY sized glass bottle, too! I will definitely be trying other products from this brand!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
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