Dave Okafor
Value & Giant-Killers Contributor
Based in Gold Coast, QLD
I'm Dave, and I'm the cheapskate of the team — and proud of it. My whole thing is finding the gear that punches three times above its price, the so-called "giant-killers," because most people don't have forty grand for a system and shouldn't feel bad about it. I've heard the megabucks stuff, and a lot of it is gloriously good; I've also heard $800 setups that get you 85% of the way there. I'll always tell you where the law of diminishing returns kicks in.
40 published articles · most recent October 19, 2026
I'm Dave, and I'm the cheapskate of the team — and proud of it.
My whole thing is finding the gear that punches three times above its price, the so-called "giant-killers," because most people don't have forty grand for a system and shouldn't feel bad about it.
I've heard the megabucks stuff and a lot of it is gloriously good. I've also heard $800 setups that get you 85% of the way there — and I'll always tell you where the law of diminishing returns kicks in.
Articles by Dave Okafor
Matching speaker and amp cost: ignore the price-parity mythForget the old rule of matching speaker and amp cost dollar-for-dollar. Here's what actually decides a good pairing, and why it isn't price.
Turntable mats and platters: what actually changes the soundFelt, rubber, cork or acrylic — turntable mats and platter materials change the sound more than most upgrades. Here's what actually works.- Buying a demo unit: the giant-killer move retailers hateEx-demo hi-fi gear can save 20-40% with near-zero risk. Here's how to actually negotiate it, what to check, and when to walk away.
- Flutter echo: the room fault that sounds like nothing's wrongFlutter echo blurs detail in parallel-wall rooms without obvious boom. Here's how to find it cheaply and kill it without over-treating.
Amp power ratings into 8 vs 4 ohms: the spec sheet trapWhy an amp's 4-ohm wattage figure can mislead buyers, and how to actually match power output to real speaker loads on a budget.
5.1.2 vs 7.1.4: the Atmos layout decision for real roomsChoosing between 5.1.2 and 7.1.4 Atmos layouts comes down to room shape and seating, not speaker count. Here's the giant-killer logic.- Streamer apps ranked by what they actually do to your fileRoon, the WiiM app, Lumin, Chromecast built-in — they all claim bit-perfect. I pulled them apart to see which ones actually leave your file alone.
- Network storage vs streaming services: do local files still earn their keep?Qobuz or Tidal already stream hi-res. So why keep a NAS full of FLACs? I ran both side by side for a year and the answer isn't what I expected.
Why a cheap sub in the right spot beats a good one in the wrong spotA $400 subwoofer in the right corner will beat a $1500 box dumped beside the TV. Here's the cheap, unglamorous process that actually fixes bass.- Bridging a Class D amp to mono: the giant-killer power trick nobody explains properlyBridging two channels of a cheap Class D amp into mono can double your power for not much cash — but it halves your load impedance too. Here's how to do it without cooking anything.
- Power and impedance matching: the real giant-killer amp questionForget topology wars. The cheapest way to get real performance from an amp is matching its power and impedance tolerance to your actual speakers.
- The WiiM playbook: how I built a four-zone multiroom system for under $900A full four-room multiroom build around WiiM streamers, done properly, for less than the cost of one premium ecosystem speaker.
- The upgrade trap: why your third purchase should fix your firstMost system builds go sideways on purchase three, when excitement overtakes diagnosis. Here's how to work out what's actually wrong before you spend again.
- Buying secondhand first: the giant-killer order of operationsWhich part of a hi-fi system to buy used first for the biggest value jump, and which parts are safer bought new. A practical spending order for giant-killers.
- The giant-killer bass trick: buy two cheap subs, not one good oneA pair of budget subwoofers almost always beats one expensive one for smoother bass across your room. Here's the maths and the real-world setup.
- Why a $400 subwoofer with a mic beats a $1200 one withoutA cheap subwoofer with built-in room correction can outperform a pricier unit with no DSP at all. Here's the giant-killer maths on why.
- Buying a used sub over a new mini: the giant-killer bass moveA ten-year-old 12-inch sealed sub for $350 will out-punch most new mini subs. Here's how to buy secondhand bass without getting burned.
- Speaker layout beats channel count: the giant-killer Atmos roomMore Atmos channels won't fix a bad layout. Here's how to get a genuinely immersive theatre from five or seven speakers placed properly.
- Valve, solid-state or Class D: matching amp topology to your speakers, not your egoForget the tribal warfare. Here's how to actually match valve, solid-state and Class D amps to your speakers, your room and your budget.
Closed-back headphones on a budget: the giant-killer case nobody makesEveryone spruiks open-back for detail, but a good closed-back pair under $400 is the smarter buy for most desks, flats and offices. Here's why.- Upgrading a budget turntable: the order that actually saves you moneyCartridge, phono stage, isolation, platter mat — the order you upgrade a budget turntable in matters more than the total you spend.
- Second-hand AV receivers: the giant-killer move nobody in home cinema admits toA three-year-old flagship AVR often out-processes a brand new budget model. Here's how to buy used without copping someone else's dead amp channel.
- Cartridge alignment: the free upgrade most turntable owners skipA protractor and twenty minutes will do more for your vinyl sound than most cartridge upgrades. Here's how to actually get alignment right.
- Class D amps have won on paper. Here's why some still sound like a spreadsheetClass D amps now beat valve and solid-state on power, size and price. So why do some still sound flat? Dave Okafor explains what the spec sheet doesn't show.
- The 60/30/10 rule: a giant-killer's guide to splitting your hi-fi budgetWhere should your hi-fi dollars actually go? Dave Okafor breaks down a simple budget split for speakers, amps and sources that beats most "advice."
- Stands are not an accessory: the giant-killer case for standmounts on proper standsA $250 pair of proper stands can outperform a $1000 speaker upgrade. Here's why stands are the cheapest giant-killer move in loudspeakers.
- Cheap DAC chips are basically solved: where your money actually goes nowA $150 DAC and a $2000 DAC often measure almost identically. Here's what the extra money is really buying, and why it's usually not "better sound" in the conversion itself.
- Budget AVR, real Atmos: building a giant-killer theatre for under $2500A proper 7.1.4 Atmos system doesn't need a $6000 processor. Here's how I'd spend $2500 on AVR, speakers and a sub to get 90% of the experience.
- Planar magnetic vs dynamic headphones: which giant-killer suits your deskPlanar or dynamic driver? Here's the honest, budget-focused breakdown of what actually changes at the desk, not just on a spec sheet.
- Used subwoofers: the giant-killer upgrade nobody talks aboutA ten-year-old sealed sub off Marketplace can beat a new budget box dollar for dollar. Here's how to buy one without getting burnt.
- MQA is gone, DSD is niche: the hi-res formats worth your money in 2025MQA has folded and DSD never really took off. Here's a bargain-hunter's honest guide to which hi-res formats and services are actually worth paying extra for.
- Giant-killer desktop rigs: getting 90% of a $3000 headphone setup for $600You don't need a four-figure DAC/amp stack to hear what good headphones can do. Here's how I'd spend $600 on a desktop rig that gets embarrassingly close to gear costing five times as much.
- Anti-skate: the setting everyone guesses and almost nobody sets rightAnti-skate isn't a "set and forget" dial. Here's how to actually get it close on a budget turntable without a test record.
- One sub, two boxes: the cheapest bass upgrade nobody buys twiceA second budget subwoofer usually beats a bigger single one. Here's the maths, the placement trick and why I'd never buy a lone giant sub again.
- Cheap multiroom that actually sounds good: building it without the taxYou don't need a five-figure whole-home system. Here's how to build genuinely good multiroom audio on a giant-killer budget.
- Class D amps have won the value war. Here's why I'm still not 100% soldClass D amps now deliver serious power for giant-killer money. Dave Okafor breaks down what you actually gain, and give up, versus solid-state and valve gear.
- Subwoofer output limiting: the setting that quietly ruins cheap subsMost budget subs sound worse the harder you push them because of built-in limiter behaviour, not the driver. Here's how to find the real ceiling.
- Watts on paper vs watts that matter: matching amp power to real speakersWhy the watts-per-channel number on the box tells you almost nothing useful, and how to actually match an amplifier to a speaker without overspending.
- Budget subwoofer, right spot: why placement beats price every timeA cheap subwoofer in the right spot will beat an expensive one shoved in the wrong corner. Here's how to find that spot without buying anything.
- DAC chip specs are marketing. Here's what actually decides sound qualityESS, AKM or a "flagship" chip name tells you almost nothing about how a DAC sounds. Here's what genuinely separates a good one from a dud, on any budget.