Short answer: the Pitt & Giblin Superwax. It ranks #4 of 8 powered floorstanding speakers by sound quality, rated 4.6/5, at $25,950; the Grimm Audio LS1c + SB1 ranks #7, rated 4.4/5, and costs $28,850, so there is not much of a tradeoff to weigh.
The case for the Pitt & Giblin Superwax: The published DSP-adjusted manufacturer measurement combines 26.2Hz -3dB extension with an 8.58 ideal-subwoofer preference score and a smooth predicted room-response trend. The catch: The measured 2.3dB response span from 300Hz to 5kHz leaves more local midrange variation than the Superwax Mini; a level overall slope is not a perfectly flat response.
The case for the Grimm Audio LS1c + SB1: Independently measured by Audio Science Review as a complete system with its SB1 subwoofers, with 0.83 listening-window smoothness and 0.38dB average on-axis deviation. The tradeoff: The standard preference score is only 5.73, rising to 7.54 with an ideal subwoofer, because spinorama puts the system’s -6dB point at 45.4Hz despite the subwoofers.
Buy the Pitt & Giblin Superwax. It is rated higher for sound quality than the Grimm Audio LS1c + SB1 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Pitt & Giblin Superwax | Grimm Audio LS1c + SB1 | |
|---|---|---|
| Price | $16,500 per pair | $43,440 per pair |
| Ranked | #4 of 8 in Large Size Powered Floorstanding Speakers | #7 of 8 in Large Size Powered Floorstanding Speakers |
| Enclosure | 3-way active, Birch plywood with separate HF waveguide and MF/LF cabinet, hardwood plinth | Active 2-way monitor on stand with integrated SB1 sealed subwoofer (3-way system) |
| Drivers | 1” compression driver on bronze waveguide, 10” sealed midrange, 2x 15” ported woofers | TPCD carbon composite tweeter (Seas); 8” Seas midrange-woofer; 10” up-firing SB1 subwoofer |
| Dimensions | 39.4”H x 39.4”W x 21.7”D (1000 x 1000 x 550 mm) (with stand) | 45.3”H x 20.5”W x 6.3”D (1150 x 521 x 160 mm) |
| Weight | 202.8 lbs (92 kg) each | 119 lbs (54 kg) each with SB1 |
| Amplifier Power | 950W total (Hypex nCore, discrete per driver) | 240W woofer and 100W tweeter per speaker (Hypex NCore); 400W per SB1 subwoofer |
| Frequency Response | 27Hz-18kHz +/-1.5dB | 20Hz-27kHz +0.5/-3dB with SB1 (manufacturer) |
| Bass Extension | 24Hz at -3dB, 20Hz at -10dB (half space) | - |
| Inputs | Analogue XLR/RCA, S/PDIF, AES, TOSLINK | Analog XLR, 3x AES/EBU, USB |
| DSP | Profiles: Natural, Live, Clean (remote selectable) | - |
| Country | Hand-built in Hobart, Tasmania, Australia | Made in the Netherlands |
| Spinorama Preference Score | 7.74 | 5.73 |
| Spinorama Preference Score with Perfect Sub | 8.58 | 7.54 |
| XLR Input | Yes | Yes |
| RCA Input | Yes | No |
| TRS Input | No | - |
| Optical Input | Yes | No |
| Coaxial Input | Yes | No |
| USB Input | No | Yes |
| HDMI Input | No | No |
| AES Input | Yes | Yes |
| Aux Input | No | - |
| Bluetooth | No | No |
| Bass Extension (-10dB) | - | approximately 28.9Hz (measured, spinorama.org ASR data) |
| Maximum SPL | - | 105dB (measured by ASR) |
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Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Pitt & Giblin Superwax: $16,500 per pair Pitt & Giblin eBay
Pros: The published DSP-adjusted manufacturer measurement combines 26.2Hz -3dB extension with an 8.58 ideal-subwoofer preference score and a smooth predicted room-response trend. Dual 15-inch woofers and a separate 10-inch midrange provide a substantial full-range architecture. Digital and analog inputs, remote volume control and three voicing profiles make the active system flexible despite its size.
Cons: The measured 2.3dB response span from 300Hz to 5kHz leaves more local midrange variation than the Superwax Mini; a level overall slope is not a perfectly flat response. Results apply to the measured DSP tuning, not every profile. At about 92kg and one metre wide per speaker, installation and room space are major considerations.
Full Pitt & Giblin Superwax review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 950W total (Hypex nCore, discrete per driver) |
| Aux Input | No |
| Bass Extension | 24Hz at -3dB, 20Hz at -10dB (half space) |
| Bluetooth | No |
| Coaxial Input | Yes |
| Country | Hand-built in Hobart, Tasmania, Australia |
| DSP | Profiles: Natural, Live, Clean (remote selectable) |
| Dimensions | 39.4”H x 39.4”W x 21.7”D (1000 x 1000 x 550 mm) (with stand) |
| Drivers | 1” compression driver on bronze waveguide, 10” sealed midrange, 2x 15” ported woofers |
| Enclosure | 3-way active, Birch plywood with separate HF waveguide and MF/LF cabinet, hardwood plinth |
| Frequency Response | 27Hz-18kHz +/-1.5dB |
| HDMI Input | No |
| Inputs | Analogue XLR/RCA, S/PDIF, AES, TOSLINK |
| Optical Input | Yes |
| RCA Input | Yes |
| Spinorama Preference Score | 7.74 |
| Spinorama Preference Score with Perfect Sub | 8.58 |
| TRS Input | No |
| USB Input | No |
| Weight | 202.8 lbs (92 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Grimm Audio LS1c + SB1: $43,440 per pair The Listening Room eBay
Pros: Independently measured by Audio Science Review as a complete system with its SB1 subwoofers, with 0.83 listening-window smoothness and 0.38dB average on-axis deviation. ASR found the widest horizontal dispersion it had measured, very clean decay and distortion that stays low at 86 and 96dB. The -10dB point sits near 28.9Hz, and the SB1’s motional feedback controls the 10-inch woofer. It is a complete active system with Hypex NCore amplification, DSP crossovers and analog, AES/EBU and USB inputs. Measured bass extension of 28.9Hz (-10dB).
Cons: The standard preference score is only 5.73, rising to 7.54 with an ideal subwoofer, because spinorama puts the system’s -6dB point at 45.4Hz despite the subwoofers. At $28850 per pair with the SB1s, it costs far more than active systems that score higher. ASR measured a maximum of about 105dB, modest output for the price. Custom finishes add weeks to the dealer lead time.
Full Grimm Audio LS1c + SB1 review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 240W woofer and 100W tweeter per speaker (Hypex NCore); 400W per SB1 subwoofer |
| Bass Extension (-10dB) | approximately 28.9Hz (measured, spinorama.org ASR data) |
| Bluetooth | No |
| Coaxial Input | No |
| Country | Made in the Netherlands |
| Dimensions | 45.3”H x 20.5”W x 6.3”D (1150 x 521 x 160 mm) |
| Drivers | TPCD carbon composite tweeter (Seas); 8” Seas midrange-woofer; 10” up-firing SB1 subwoofer |
| Enclosure | Active 2-way monitor on stand with integrated SB1 sealed subwoofer (3-way system) |
| Frequency Response | 20Hz-27kHz +0.5/-3dB with SB1 (manufacturer) |
| HDMI Input | No |
| Inputs | Analog XLR, 3x AES/EBU, USB |
| Maximum SPL | 105dB (measured by ASR) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.73 |
| Spinorama Preference Score with Perfect Sub | 7.54 |
| USB Input | Yes |
| Weight | 119 lbs (54 kg) each with SB1 |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons