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SIQ 1500 D (Class D)
Discover our SIQ amplifiers: a blend of Hi-Fi class A/B & D backed by 25+ years of audiophile expertise. Boasting top-tier components for crystal-clear sound, we offer these gems directly to you for exceptional value. Experience pristine power, from SIQ 75.4 to the robust SIQ 3000 D.
Description
Hi-Fi class A/B and class D amplifiers are back with our SIQ amplifiers. Full bandwidth, zero filters, discrete gain knob per channel, zero crossovers, zero EQ. Purity at its finest. Being avid audiophiles for over 25 years we have always appreciated the finer performing amplifiers in mobile audio and with our growing presence in the mobile audio industry, we have been able to team up with talented amplifier engineers and finally produce our own hi-fi amplifiers. Audiophile components were used throughout construction and engineering to bring our amplifiers to fruition. And because we are a direct company (no dealers) the cost savings are passed directly to you, our customers.
All of our SIQ class A/B amplifiers utilize audiophile-grade T0-3 output transistors, clean board layouts, thick extruded aluminum chassis, copper anodized shielded transformer covers, and a large plexiglass viewing window. Coming inward we use UPC4570 op-amps followed by IRFPO64N power supply transistors, sand cast resistors, surface mount parts to save board space, and Tiffany-style RCA connections. All of the above FR and power graphs are from Audio Precision measurements.
Amplifiers Specifications
Quick Info
| Frequency Response Minimum | 5 Hz |
| Frequency Response Maximum | 200 Hz |
| Signal-to-Noise Ratio (SNR) | 85 dB |
| Total Harmonic Distortion (THD) | 0.15 % |
| Dimensions (W x H x D) | 16.5 x 8 x 2 Inches |
| Rated RMS power at 1 ohm | 1500 Watts |
| Rated RMS power at 2 ohm | 900 Watts |
| Rated RMS power into 4 ohm | 600 Watts |
Connections
| RCA Input Maximum | 16 Volts |
Power
| Idle Current Draw | 1.3 amps |
| Maximum Current Draw | 173 amps |
1 review for SIQ 1500 D (Class D)
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Ian –
I recently replaced an Alpine PDX-F4 and PDX-V9 with a trio of the SIQ amplifiers – A 75.4 for tweeters and midrange, another 75.4 bridged to a pair of SI TM65 and a 1500.1 powering an SQL-12 in a sealed enclosure. I had zero complaints with the PDX amplifiers, but the SIQ amplifiers have taken my system to another level, there is that little extra detail that was lacking before. Plenty of power, all the volume I could ever need, the price point is excellent for what you are getting and once you peel that protective layer off the window…. they look phenomenal. Don’t hesitate to buy one if you are considering it, you won’t be disappointed at all.