| Model |
Challenger Apollo-39 Natural Pine Top (Electro-Acoustic) |
| Body Shape |
Grand Auditorium with Venetian cutaway — balanced tone & upper-fret access |
| Top Wood |
Natural Pine (select), X-braced, book-matched for warmth and projection |
| Back & Sides |
Mahogany laminate — warm mids, focused lows, smooth highs |
| Finish |
Natural satin on top; gloss body; clear protective topcoat |
| Color / Aesthetics |
Natural pine top with visible grain, brown back/sides; subtle amber hue |
| Binding & Purfling |
Cream ABS binding; multi-ply black/white top purfling; back strip detail |
| Rosette |
Multi-ring rosette with metallic accent ring |
| Pickguard |
Tortoise or black teardrop (market dependent); protective film fitted |
| Neck |
Mahogany, satin finish; comfortable C-profile for low fatigue |
| Scale Length |
25.5" / 648 mm — balanced tension & articulation |
| Fingerboard |
Engineered rosewood, ~12" radius; rolled edges; low-glare surface |
| Frets / Inlays |
20 medium frets; polished ends; pearl dot inlays & side markers |
| Nut Width & Material |
~43 mm; synthetic bone (NuBone-style) for tone & stability |
| Truss Rod |
Dual-action; headstock access (4 mm hex) |
| Bridge & Saddle |
Rosewood-style bridge; compensated synthetic bone saddle for intonation |
| String Spacing (Bridge) |
~55 mm E-to-e — comfortable for strumming & fingerstyle |
| Factory Strings |
.012–.053 phosphor bronze; 80/20 bronze optional |
| Electronics |
Under-saddle piezo with active preamp; 3-band EQ (Bass/Mid/Treble), Master Volume, Phase |
| Onboard Tuner |
Integrated digital tuner with LED display; auto-mute during tuning |
| Outputs & Power |
1/4" TS output jack; 9V battery compartment; low-noise preamp circuit |
| Machine Heads |
Die-cast sealed tuners, ~18:1 ratio, chrome finish |
| Action Target (12th Fret)* |
~2.2 mm (low E) / ~1.8 mm (high e) — factory setup, user-adjustable |
| Dimensions (Approx.) |
Overall 1030 mm; lower bout 405 mm; upper bout 295 mm; body depth 100–120 mm |
| Weight (Approx.) |
~2.0–2.3 kg (varies with wood density & hardware) |
| Case / Bag |
Padded gig bag recommended; deluxe hardshell case optional (sold separately) |
| Included Accessories |
Truss-rod hex key, spare bridge pins, quick-start guide, warranty card (region dependent) |
| Care & Environment |
Maintain 45–55% RH; avoid direct heat/sunlight; use case humidifier in dry climates |
| Notes |
*Factory setups vary by batch. Specifications subject to change without notice. Measurements are approximate. |
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