- +Your swing speed is 80–100 mph and you want maximum forgiveness
- +Your miss is wider and you need the largest mini driver footprint available
- +You're coming from a forgiving 460cc driver and want the closest mini experience
- +You want driver-adjacent ball speed without a traditional driver's length
- +Callaway's AI face technology and brand are a known quantity for you
- +Your swing speed is 95 mph or above and you make consistent center contact
- +You work with a fitter and want precision SureFit CG adjustability
- +Tour-level feel and crisp impact feedback matter to your game
- +You want the most precise fitting range in the mini driver category
- +You're replacing a low-spin driver and want to maintain precision
Mini drivers are not half-measures: a properly fitted Quantum Mini or GTS300 Mini produces 85–95% of a full driver's distance with meaningfully tighter dispersion. The question isn't whether a mini driver can compete — it's which one is fitted to your specific swing speed and contact pattern.
Specs at a Glance
| Spec | Quantum Mini | GTS300 Mini |
|---|---|---|
| Head Size | 340cc | 305cc |
| Face Tech | AI-Optimized Variable Face | Speed Sync Face |
| Weight System | Front/Back Moveable Weights | Dual Weights + SureFit CG |
| MOI | Very High | High |
| Launch | Mid | Mid |
| Spin | Mid | Mid-Low |
| Forgiveness | Maximum | High |
| Workability | Moderate | Moderate-High |
| Hosel Adjust | Hosel + Weight | SureFit CG (33 settings) |
| Price (2026) | ~$549 new | ~$549 new |
Head to Head
Head Size and MOI
Edge: Quantum MiniQuantum Mini
The Quantum Mini's 340cc head is the largest in the current mini driver market — significantly bigger than the 305cc GTS300 Mini and closer to a traditional fairway wood footprint than a compact mini. That size translates directly to higher MOI: more mass distributed further from the CG means the face twists less on heel and toe mishits. For golfers coming from a 460cc driver who want the most similar experience in a smaller, more accurate format, the Quantum Mini's 340cc head is the closest option available.
GTS300 Mini
The GTS300 Mini's 305cc head sits in the mid-range of the mini driver category — small enough to inspire confidence on tight tee shots, large enough to carry the dual weight system and SureFit CG hosel that give it its adjustability range. It has meaningfully less MOI than the Quantum Mini's 340cc, which means off-center hits are slightly more punishing. For a player who makes consistent center contact, this is a non-issue; for a player with a wider miss, the Quantum Mini's size advantage is real.
Ball Speed and Distance
Edge: Quantum Mini (off-center) · GTS300 Mini (center contact)Quantum Mini
The Quantum Mini's AI-optimized variable face is designed to maximize ball speed across the entire face, not just the sweet spot. This produces more consistent ball speed on off-center hits — Callaway's face design from the full Quantum driver line applied to the mini format. For golfers who don't consistently find the center, the Quantum Mini's AI face maintains more ball speed across a wider contact area, making it the higher total-distance option in realistic conditions.
GTS300 Mini
The GTS300 Mini's Speed Sync face prioritizes ball speed from center contact, producing peak ball speeds that compete with or exceed the Quantum Mini when the middle is found consistently. For a fast swinger (95+ mph) who hits the center regularly, the GTS300 Mini's center-strike ball speed advantage is real and measurable. The SureFit CG system also lets a fitter optimize the spin and launch window specific to a fast swinger's delivery, squeezing more total carry from optimized center strikes.
Fitting Flexibility
Edge: GTS300 Mini (precision fitters) · Quantum Mini (range of players)Quantum Mini
The Quantum Mini's front/back weight system lets you shift the CG from a forward position (lower spin, more distance) to a rear position (higher launch, more forgiveness). Combined with the hosel adjustment, you can dial in a launch and spin window appropriate for moderate or fast swing speeds. This adjustability is meaningful but it is a two-variable system — forward/back and hosel — rather than the full SureFit precision of the GTS300 Mini.
GTS300 Mini
The GTS300 Mini's dual weight system combined with the SureFit CG hosel gives it more precise fitting flexibility than the Quantum Mini. You can independently adjust CG position (affecting spin and stability) and hosel settings (affecting loft and lie), creating a larger matrix of fitting combinations. For a player working with a fitter who wants to optimize trajectory with precision, the GTS300 Mini is the more tunable tool. The SureFit hosel alone offers more settings than most driver hosels.
Feel and Sound
Edge: GTS300 Mini (premium feel) · Quantum Mini (familiar/softer)Quantum Mini
The Quantum Mini sounds and feels like a Callaway driver in miniature — a soft, muted impact sound with good feedback through the grip. Players familiar with Callaway's full driver lineup will find the Quantum Mini's impact character consistent with what they expect from the brand. It is not the crispest feel in the mini driver category, but for a golfer coming from an Elyte or Paradym driver, the transition is seamless.
GTS300 Mini
The GTS300 Mini carries Titleist's premium impact character — a crisp, responsive sound that communicates exactly where on the face you made contact. Fast swingers who rely on impact feedback to self-correct will find the GTS300 Mini's feel more informative than the Quantum Mini's softer character. It is the feel profile of a tour-caliber club in a smaller format, which is exactly what Titleist targets with the GTS designation.
Who Each Club Is For
Edge: Quantum Mini (80–100 mph, wider miss) · GTS300 Mini (95+ mph, precise striker)Quantum Mini
The Quantum Mini suits golfers who want a driver replacement in the 80–100 mph swing speed range, who have a wider miss pattern, and who want maximum forgiveness from their mini driver. Its 340cc head, AI face, and front/back weights make it the most accessible mini driver for mid-handicappers who want something shorter and more accurate than a driver without sacrificing much distance. If you are switching from a forgiving 460cc driver and want to replicate that experience in mini format, the Quantum Mini is the closest option.
GTS300 Mini
The GTS300 Mini suits fast swingers above 95 mph who make consistent center contact, want tour-level feel and precision CG adjustability, and are comfortable with a smaller head footprint. It is also the better choice for players who work with a club fitter regularly and want to extract the most distance and trajectory precision from their mini driver. If you are replacing a low-spin or LS driver and want to maintain that precision at a shorter length, the GTS300 Mini is the right tool.
Full Mini Driver Lineup
If neither the Quantum Mini nor the GTS300 Mini feels like the right fit, here is how the full 2026 mini driver market breaks down.
| Driver | Head Size | Best For |
|---|---|---|
| Callaway Quantum Mini | 340cc | Maximum forgiveness, driver replacement |
| Titleist GTS300 Mini | 305cc | Tour feel, high-speed precision |
| Titleist GT280 Mini | 280cc | Versatility, 3-wood replacement |
| TaylorMade R7 Quad Mini | ~300cc | Shot shaping, weight customization |
| Cobra KING TEC Mini | ~300cc | Spin reduction, fast tempo swings |
| PXG Secret Weapon Mini | ~310cc | High launch, moderate swing speeds |
Where to Buy
Frequently Asked Questions
What is the difference between the Callaway Quantum Mini and Titleist GTS300 Mini?
The Callaway Quantum Mini is a 340cc head — the largest in the mini driver category — with front and back weight positions and a hosel adjustment for maximum forgiveness and driver-like ball speed. The Titleist GTS300 Mini is 305cc with dual weights and the SureFit CG system borrowed from the full GTS driver lineup, producing high MOI stability with a more precise, tour-influenced feel. Both are positioned as driver replacements; the Quantum Mini leans toward maximum forgiveness and the GTS300 Mini leans toward ball-speed retention and premium feel for faster swingers.
Can a mini driver replace a full driver?
For many golfers, yes — particularly when accuracy off the tee matters more than absolute maximum distance. A well-fitted mini driver like the Quantum Mini or GTS300 Mini can produce 85–95% of a standard driver's distance with meaningfully tighter dispersion. The trade-off is that mini drivers are typically more forgiving vertically (less gear effect on high or low face contact) while still being slightly shorter in distance than a well-struck 460cc driver at the same swing speed.
What swing speed is the Callaway Quantum Mini designed for?
The Callaway Quantum Mini is designed for a wide range of swing speeds, with its 340cc head and front/back adjustability making it most useful for moderate to fast swingers (80–105 mph) who want driver-adjacent ball speed with better accuracy. The larger 340cc head also makes it more forgiving on off-center hits than smaller mini drivers, which broadens its appeal to mid-handicappers who might otherwise struggle with a more compact head.
What swing speed is the Titleist GTS300 Mini designed for?
The GTS300 Mini is designed with high-swing-speed players in mind — typically 95 mph and above — who want a driver-replacement mini driver that rewards precise ball-striking with Speed Sync face technology and SureFit CG weighting. Its 305cc head and dual weight system allow a fitter to optimize CG for specific spin and launch windows, which is most valuable for players who generate enough speed to take advantage of those precision adjustments.
Is there a loft difference between the Callaway Quantum Mini and Titleist GTS300 Mini?
Both the Quantum Mini and GTS300 Mini are typically available in lofts ranging from approximately 13.5° to 16°, which is the standard range for driver-replacement mini drivers. The GTS300 Mini's SureFit hosel adds additional loft and lie adjustment on top of the stated loft, giving it more precise trajectory control. Both can be fitted to an optimal launch angle for a given swing speed; the GTS300 Mini has more hosel flexibility to do so.