New Linux box soon to enter the scene based on Enigma 1 but built by a company that I believe has a reputation for high quality Clarke Tech.
the CT550-pvr
This box is described as being very similar in function to the DM600

SPECIFICATION Clarke-Tech CT-550pvr:
- 4 Digits LED Display Channel/ Time/ Process Display
- Fully DVB compliant
- Linux open source ; Standard Linux API
- Getting various Linux applications
- 252MHz IBM PowerPC Processor (350MIPS)
- Memory: 72 Mb ram + 16 Mb flash rom (program memory) !!!
- 1x USB 2.0 for Mass Storage Device (for example HDD and more...) !!!
- 10/100M Ethernet interface
- 2 x SCART CONN.: TV and VCR
- 1 x Smart card slots
- Modem

CLARKE-TECH satellite decoder with Linux(enigma) embedded
- S/PDIF Interface; Optical Type
- Firmware/ Software Upgrade: Through Serial (RS232S), Ethernet & Internet
- Unlimited TV/ Radio Channel Storage
- Very Quick Channel Change Time: < 1second
- Full Automatic Service Scan
- Smart Electronic Program Guide (EPG)
- OSD, VBI Teletext & Subtitle Supported
- Variable Aspect Ratio (4:3, 16:9, Letter Box)
- Multi-Language Menu
- Programmable Event Timer
- Parental Control
- Video Out: CVBS, S-Video, Component Output

TUNER:
- Tuner Receiving Freq./ Loop through output 950 ~ 2150MHz / 950 ~ 2150MHz
- Input Impedance 75 ohms
- Input Signal Level Min. -65dbm ~ Max. -25dbm
- LNB Polarization Switching Voltage 13/18Vdc@Max 400mA,Short Circuit Protection
- Band Switching 22Khz Tone, DiSEqC1.2
- I/Q Output 10MHz to 30 MHz, Variable( 2MHz step)
- Demodulation according DVB-S
- Symbol Rate 2 ~ 45 Msps
- Link IC STV0299B
- Viterbi Decoding Rate 1/2, 2/3, 3/4, 4/5, 5/6, 7/8, Automatic or Manual rate
- Reed Solomon Decoding FEC, block length( 204 byte )

TRANSPORT D***LTIPLEXER (d***ltiplex):
- (Video) According to ISO/IEC 13818-1 a MPEG-2 and MPEG-1 compatible
- (Audio) MPEG-1 & MPEG-2 Layer I and II a Freq. : 32K, 44.1K, 48K, 16K, 22.05K, 24KHz

VIDEO DECODING PARAMITERS:
- Video Decoding ISO/IEC 13818-2 MP@ML
- Aspect Ratio 4:3, 16:9
- Resolution Max.720 x576

BASEBAND VIDEO/AUDIO OUTPUT:
- Video Output Impedance 75 ohms
- Video Output Level 1 Vp_p
- Audio Output Impedance 600 ohms Unbalanced
- Audio Output Ievel 3.0 Vp_p With Volume Control
- Digital Audio Output Level 0.5 Vpp With 75 ohm Terms

MICROPROCESSOR AND MAIN MEMORIES:
- Microprocessor Type Vulcan(IBM) PowerPC Processor 252MHz/ 350MIPS
- Flash ROM(for program memory) 8MByte x 2 (16 MB total)
- SDRAM( for decoding) 32MByte x 2, (MByte x 1 (72 MB total)