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Zapco — Car Audio Amplifiers & DSP Processors in Ukraine
Zapco is an American car audio brand with more than 50 years of history (since 1974). Part of the APEX Group, Zapco has long defined quality standards in Car Audio — from the first parametric equaliser in 1978 to today's flagship HDSP-V Series DSP processors with a –140 dB noise floor.
The Zapco catalogue spans two product lines: Competition Series (for SQ competitions and audiophiles) and Studio Series (for daily premium-grade sound). SoundsGood carries the full Zapco range for those who believe sound truly matters.

50+ years of expertise
SQ competition winners
From ₴4,000
PrivatBank / monobank
🏭 About Zapco
An American Legend Since 1974
Zapco began its journey in 1974 as a pioneer of car audio. In 1978 the company released the first genuine parametric equaliser for the car — the PEQ. Today Zapco is part of APEX Group (Italy) and remains the industry benchmark.
Competition Series
The highest tier for car audio competitions and audiophiles: HDSP-V (DSP processors), Z-AP and Z-II (Class A/B amplifiers), REF (Reference Series), ST-X, ST-D, ST-B, ST-A.
Studio Series (HB)
HB Series — DSP/Amp combos and A/V players for daily use. Powerful sound, intuitive control, Bluetooth and a built-in HD player. The optimum price-to-performance ratio.
DSP Processing Leader
Zapco was first to bring a digital processor to the car audio market in 2004. Every generation sets a new standard: from the DC Line to ADSP-Z8, ADSP-IV, and today's HDSP-V flagship.
🖥️ HDSP-V Series — Zapco's Flagship DSP Processor
Fifth-generation Zapco digital processors. Nearly three years in development by a team of electronics, acoustics and signal-processing engineers — all united by one goal: to reproduce live music in a car with absolute accuracy.
912 MHz · 64-Bit DSP
The most powerful processor in class. 64-bit signal processing at 912 MHz clock speed delivers infinitely precise calculations for every parameter — EQ, time alignment, crossovers.
–140 dB Noise Floor
Record-low noise for a 16-channel DSP device. Crosstalk: –115 dB. Analogue input S/N: 109 dB, digital: 114 dB. THD below 0.001% at 4 V output.
Up to 16 Output Channels
Full active per-channel speaker management. 456 MHz HD Audio Player supports 24 bit / 192 kHz files. Wi-Fi and optional aptX HD Bluetooth for smartphone control.
Modular Architecture
The HDSP-Z16 V is made up of 18 individual modules — ADC/DAC, power supply, processor. Each block can be replaced or upgraded independently. Touchscreen Display and wireless control via smart device.
🔊 Z-AP and Z-II Series — Audiophile Amplifiers
Z-AP Series (Audiophile)
The pinnacle of the Zapco amplifier line. Class A/B, developed by ear as much as by measurement. WIMA poly caps in the signal path, proprietary custom electrolytics in the power supply, low-noise input op-amp. Outperforms home amplifiers costing twice as much.
Z-II Series (SQ)
Class A/B and Class D amplifiers for SQ competitions and demanding enthusiasts. The direct descendant of the legendary Z-Series LX. Competition-proven and beloved by audiophiles worldwide.
For Car and Home
Thanks to its circuit topology, the Z-AP Series can also be used at home — with an AC/DC power supply. One amplifier, two environments. Zapco's claim: your car can sound better than your home system.
📻 REF, ST-X and ST-D Series
REF Series (Reference)
The legend returns: the new Reference Series delivers 1, 2, 4 and 6-channel amplifiers with the best sound in their price bracket. Hand-selected internal components, a refined design. Sounds as good as — or better than — competitors' most expensive amps.
ST-X III Series
Class A/B and Class D amplifiers for those who want competition-level sound at a sensible price. Wide model range: from 2-channel stereo to mono subwoofer blocks.
ST-D Compact & Mini
ST-D Compact — powerful Class D amplifiers in a compact chassis for tight-space installs. ST-D Mini — ultra-compact amplifiers for vehicles where every centimetre counts.
ST-B and ST-A Series
ST-B — excellent sound for daily use at an accessible price point. ST-A — amplifiers optimised for Android head units with correct signal-level matching.
🎛️ HB Series & A/V Player — Studio Line
HB Series — DSP/Amp combos and media players in the Studio line for listeners who want the best sound without the complexity of Competition-class setup.
HB DSP/Amp Combos
The range includes: HB 68 II (8-ch DSP, 31 bands), HB 46 4A II (6-ch DSP + 4-ch Class AB), HB 48 4A II (8-ch DSP + 4-ch), HB 410 8A II (10-ch DSP + 8-ch), HB 810 II 8AD (8-ch DSP + Class AB + Class D). All in a single unit.
HB MS Series — A/V Player
High-resolution A/V players for HD video and audio playback. HD BT Streaming (aptX HD), OTG input. The ideal signal source to pair with HB DSP/Amp units.
Shared HB Series Features
31-band parametric EQ, HD Bluetooth streaming, OTG input, integrated music player, full GUI for tuning from any smart device.
🎚️ The Evolution of Zapco DSP Processing
Over 45 years, Zapco has set the standards for in-car digital signal processing.
1978 — PEQ (The First)
The first true parametric equaliser for the car: 9 bands, 2 channels, balanced input, military-grade components, high-voltage outputs. A new era in car audio.
2004 — DC Line
The first computer-controlled digital processing network for the car. 6-channel DSP plus amplifiers with built-in DSP. DPN Network: control every amplifier from a single screen.
2017 — ADSP-IV (DSP-Z8 IV)
An affordable DSP delivering audiophile sound quality superior to units costing twice as much. A newly designed user interface makes system tuning intuitive and fast.
2020+ — HDSP-V Series
Fifth generation. 912 MHz / 64 Bit / –140 dB noise / 16 channels / HD Player / Wi-Fi / aptX HD. Three years of development. Sets new industry benchmarks.
📊 Zapco Series Comparison
| Series | Line | Type | Channels | Best For |
|---|---|---|---|---|
| HDSP-V | Competition | DSP Processor | Up to 16 | Flagship, SQ competition, audiophile |
| Z-AP | Competition | Amplifier Class A/B | 2 / 4 | Audiophile SQ |
| Z-II | Competition | Amplifier Class A/B + D | 2 / 4 / mono | Competition, SQ |
| REF | Competition | Amplifier | 1 / 2 / 4 / 6 | Best in price bracket |
| ST-X III | Competition | Amplifier A/B + D | 2 / 4 / mono | Competition-level value |
| ST-D Comp / Mini | Competition | Amplifier Class D | 4 / mono | Compact install, tight space |
| HB Series | Studio | DSP + Amplifier | 4–10 | Daily premium sound |
| HB MS | Studio | A/V Player + DSP | — | HD source + processing |
🎯 How to Choose Zapco
🏆 SQ Competition
HDSP-V Series (DSP) + Z-AP or Z-II (amplifiers). Per-channel active system, maximum sonic accuracy, record-breaking specifications.
🎧 In-Car Audiophile
Z-AP Series amplifiers + HDSP-V or ADSP-IV processor. Hi-Fi listening-room performance delivered inside your vehicle.
💎 Best Sound Per £ / $
REF Series — highest quality in its price segment. 1, 2, 4 and 6 channels. For those who want Zapco sound without a competition budget.
🚗 Daily Premium — No Fuss
HB Series DSP/Amp combo — DSP (31 bands), amplifier, Bluetooth and player all in one unit. Install, tune once, and enjoy.
📦 Limited Install Space
ST-D Compact or ST-D Mini — maximum power in a minimum footprint. Perfect for hatchbacks, crossovers and vehicles with small boot space.
📱 Android Head Unit Integration
ST-A Series — amplifiers optimised for Android car radios. Correct signal-level matching without compromise.
🎬 Media + Sound
HB MS Series A/V Player — high-resolution video and audio as a source, combined with HB DSP/Amp for a complete HD multimedia system.
🔊 Subwoofer Upgrade
Mono Class D amplifiers from the ST-X III or ST-D Compact range — purpose-built for subwoofers. Efficient Class D topology, high output power, stable 1 Ω operation.
❓ FAQ
What is Zapco?
Zapco is an American car audio brand founded in 1974. For over 50 years it has defined quality standards in Car Audio. Part of APEX Group (Italy). Core specialisation: amplifiers and DSP processors at competition and audiophile level.
What is the difference between Competition and Studio Series?
Competition Series (HDSP-V, Z-AP, Z-II, REF, ST-X, ST-D) — flagship solutions for SQ competitions and audiophiles with maximum technical specs. Studio Series (HB) — optimum balance of quality, convenience and price for daily use.
What is the Zapco HDSP-V Series?
The HDSP-V is Zapco's flagship DSP processor: 912 MHz / 64-bit, up to 16 channels, –140 dB noise floor, HD Audio Player 24 bit/192 kHz, Wi-Fi, aptX HD Bluetooth, modular architecture. The ultimate level of in-car digital signal processing.
What is the Zapco Z-AP Series?
The Z-AP is a series of audiophile-grade Class A/B amplifiers developed by ear. WIMA poly caps in the signal path, proprietary electrolytic capacitors and a low-noise op-amp input stage. Outperforms home amplifiers costing twice the price.
What is the Zapco REF Series?
The Reference Series is a legendary Zapco amplifier line, reborn. Available in 1, 2, 4 and 6-channel models. Best-in-class sound for the money: hand-selected components and a design that competes with far more expensive brands.
Where can I buy Zapco in Ukraine?
At the SoundsGood store in Kyiv (Olzhycha St. 15, Dorohozhychi metro) or online at soundsgood.com.ua. Free shipping from ₴4,000. Instalment payment via PrivatBank and monobank.
🏆 Why SoundsGood
Full Zapco Catalogue
Competition and Studio Series in stock
Free Shipping
From ₴4,000 across Ukraine
Instalment Payment
PrivatBank and monobank
Genuine Products
Official stock only
Expert Advice
System matching for your vehicle and goals
Kyiv Showroom
Olzhycha St. 15, Dorohozhychi metro
Car Audio Expertise
We know SQ competition from the inside
Fast Dispatch
Orders before 15:00 — shipped same day
📞 Contact
📍 Address
Olzhycha St. 15, Kyiv 04116
Metro: Dorohozhychi
🕐 Hours
Mon–Fri: 11:00–18:00
Sat–Sun: closed